Contents

• Setup
  • Vehicle Information
  • Trigger
  • Advanced Trigger
  • Trigger Gap Override
  • Battery and Alternator Settings
  • Ignition key input Settings
  • Outputs
  • Air Conditioning
  • Status LEDs
• Fuel
  • Injection hardware
  • Injection configuration
  • Cylinder Banks
  • Injector small-pulse correction
  • Staged injection
  • VE
  • VE Table
  • Target AFR
  • Estimated cylinder air temperature
  • Baro Correction
  • MAP Estimate
  • Warmup enrichment
  • Intake air temperature fuel Multiplier
  • Coasting Fuel Cutoff Settings
  • Short term fuel trim/Closed loop
  • Long term fuel trims
  • Long Term Fuel Trim Bank 1
  • Long Term Fuel Trim Bank 2
  • Injection Timing
  • Accel/Decel Enrichment
  • TPS/TPS acceleration extra fuel
  • Transient RPM correction
  • Predictive Map Blend Duration
• Ignition
  • Ignition settings
  • Ignition advance
  • Warmup timing correction
  • Ignition Intake Air Temp correction
  • Dwell
  • Multispark
  • Software Knock
  • Max knock retard
• Cranking
  • Cranking Settings
  • After start enrichment
  • Priming fuel pulse
  • Cranking Cycle Base Fuel
  • Cranking Coolant Temperature Multiplier
  • Cranking TPS Multiplier
• Idle
  • Idle settings
  • Idle hardware
  • Idle Target RPM
  • Idle position by Engine Temperature
  • Cranking Idle Valve Curve
  • Idle Valve Crank-to-Run Taper
  • Closed-loop idle timing
• Advanced
• Sensors
  • Analog Input Settings
  • CLT Sensor
  • IAT Sensor
  • TPS
  • Accelerator pedal
  • MAP sensor
  • MAP sampling
  • Baro sensor
  • MAF sensor
  • CAN O2 sensors
  • Analog O2 sensor
  • rusEFI Wideband Tools
  • SENT protocol inputs
• CAN-bus
  • CAN Bus Communication
  • CAN Vehicle Speed
  • CAN O2 sensors
  • CAN EGT sensors
  • CAN MS IO-Box Settings
• Controller
  • ECU stimulator
  • Bench Test & Commands
  • Injector test
  • Base Tunes
  • rusEFI Console Settings
  • SD Card
  • Connection
  • All IO 1/3
  • All IO 2/3
  • All IO 3/3
  • Low-Z smart injector control
  • HPFP Cam Configuration
  • HPFP Pump Configuration
  • HPFP Target Fuel Pressure
  • HPFP Pump Feed Forward
  • Important Details
  • Rain Mode Just An Example
  • Traction Control ETB drop
  • Traction Control Timing drop
  • Traction Ignition Skip
  • Experimental/Broken
  • Experimental 2
  • Experimental 3
  • Harley Automatic Compression Release
  • Rotary
• View

rusEFI Configuration Guide

Setup

Vehicle Information

Number of cylinders

Number of cylinder the engine has.

Displacement

Engine displacement in litres

Firing order

Tuning View

Engine Make

For example, BMW, GM or Chevrolet
REQUIRED for rusEFI Online

Manufacturer Engine Code

For example, LS1 or NB2
REQUIRED for rusEFI Online

Vehicle Name

For example, Hunchback or Orange Miata
Vehicle name has to be unique between your vehicles.
REQUIRED for rusEFI Online

VIN

Individual characters are accessible using vin(index) Lua function

Fuel strategy

Determines the method used for calculating fuel delivery. The following options are available:
Uses intake manifold pressure (MAP) and intake air temperature (IAT) to calculate air density and fuel requirements. This is a common strategy, especially for naturally aspirated or turbocharged engines.
Alpha-N: Uses throttle position as the primary load input for fuel calculation. This strategy is generally used in engines with individual throttle bodies or those that lack a reliable MAP signal.
MAF Air Charge: Relies on a Mass Air Flow (MAF) sensor to measure the amount of air entering the engine directly, making it effective for engines equipped with a MAF sensor.
Lua: Allows for custom fuel calculations using Lua scripting, enabling highly specific tuning applications where the other strategies don't apply.

Trigger

Strokes

Trigger type

https://wiki.rusefi.com/All-Supported-Triggers

Skipped wheel location

Where is your primary skipped wheel located?

Trigger Angle Advance

Angle between Top Dead Center (TDC) and the first trigger event.
Positive value in case of synchronization point before TDC and negative in case of synchronization point after TDC
.Knowing this angle allows us to control timing and other angles in reference to TDC.
HOWTO:
1: Switch to fixed timing mode on 'ignition setting' dialog
2: use an actual timing light to calibrate
3: add/subtract until timing light confirms desired fixed timing value!'

Primary Edge

https://wiki.rusefi.com/Trigger-Configuration-Guide
This setting flips the signal from the primary engine speed sensor.

Secondary channel

triggerInputPins 2
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~event_inputs

Secondary Edge

https://wiki.rusefi.com/Trigger-Configuration-Guide
This setting flips the signal from the secondary engine speed sensor.

Cam mode (intake)

vvtMode 1

Cam mode (exhaust)

vvtMode 2

Cam sensor bank 1 intake

Camshaft input could be used either just for engine phase detection if your trigger shape does not include cam sensor as 'primary' channel, or it could be used for Variable Valve timing on one of the camshafts. 1
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~event_inputs

Cam sensor bank 1 exhaust

Camshaft input could be used either just for engine phase detection if your trigger shape does not include cam sensor as 'primary' channel, or it could be used for Variable Valve timing on one of the camshafts. 2
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~event_inputs

Cam sensor bank 2 intake

Camshaft input could be used either just for engine phase detection if your trigger shape does not include cam sensor as 'primary' channel, or it could be used for Variable Valve timing on one of the camshafts. 3
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~event_inputs

Cam sensor bank 2 exhaust

Camshaft input could be used either just for engine phase detection if your trigger shape does not include cam sensor as 'primary' channel, or it could be used for Variable Valve timing on one of the camshafts. 4
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~event_inputs

intake Cam Edge Select

exhaust Cam Edge Select

VVT offset bank 1 intake

Angle between cam sensor and VVT zero position 1

VVT offset bank 1 exhaust

Angle between cam sensor and VVT zero position 2

VVT offset bank 2 intake

Angle between cam sensor and VVT zero position 3

VVT offset bank 2 exhaust

Angle between cam sensor and VVT zero position 4

Cam for engine sync resolution

Select which cam is used for engine sync. Other cams will be used only for VVT measurement, but not engine sync.

Advanced Trigger

Require cam/VVT sync for ignition

Some engines are OK running semi-random sequential while other engine require phase synchronization

Cam sync crank revolution

When we sync cam sensor is that first or second full engine revolution of the four stroke cycle?

Maximum cam/VVT sync RPM

Below this RPM, use camshaft information to synchronize the crank's position for full sequential operation. Use this if your cam sensor does weird things at high RPM. Set to 0 to disable, and always use cam to help sync crank.

Enable noise filtering

Print verbose VVT sync details to console

Verbose info in console below engineSnifferRpmThreshold

Print verbose trigger sync to console

Verbose info in console below engineSnifferRpmThreshold

Display logic signals

Shall we display real life signal or just the part consumed by trigger decoder.
Applies to both trigger and cam/vvt input.

Do not print messages in case of sync error

Sometimes we have a performance issue while printing error

Focus on inputs in engine sniffer

In this mode only trigger events go into engine sniffer and not coils/injectors etc

Trigger Gap Override

Override well known trigger gaps

gapTrackingLengthOverride

How many consecutive gap rations have to match expected ranges for sync to happen

First gap from

triggerGapOverrideFrom 1

First gap to

triggerGapOverrideTo 1

Second gap from

triggerGapOverrideFrom 2

Second gap to

triggerGapOverrideTo 2

Gap #3 from

triggerGapOverrideFrom 3

Gap #3 to

triggerGapOverrideTo 3

Gap #4 from

triggerGapOverrideFrom 4

Gap #4 to

triggerGapOverrideTo 4

Gap #5 from

triggerGapOverrideFrom 5

Gap #5 to

triggerGapOverrideTo 5

Gap #6 from

triggerGapOverrideFrom 6

Gap #6 to

triggerGapOverrideTo 6

Gap #7 from

triggerGapOverrideFrom 7

Gap #7 to

triggerGapOverrideTo 7

Gap #8 from

triggerGapOverrideFrom 8

Gap #8 to

triggerGapOverrideTo 8

Override well known VVT gaps

gapVvtTrackingLengthOverride

How many consecutive VVT gap rations have to match expected ranges for sync to happen

First VVT gap from

triggerVVTGapOverrideFrom 1

First VVT gap to

triggerVVTGapOverrideTo 1

Second VVT gap from

triggerVVTGapOverrideFrom 2

Second VVT gap to

triggerVVTGapOverrideTo 2

VVT gap #3 from

triggerVVTGapOverrideFrom 3

VVT gap #3 to

triggerVVTGapOverrideTo 3

VVT gap #4 from

triggerVVTGapOverrideFrom 4

VVT gap #4 to

triggerVVTGapOverrideTo 4

Battery and Alternator Settings

Enabled

This enables smart alternator control and activates the extra alternator settings.

Control output

https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~outputs

Control output mode

PWM frequency

A/C duty adder

offset

Linear addition to PID logic
Also known as feedforward.

P factor

I factor

D factor

iTerm min

iTerm min value

iTerm max

iTerm max value

Min

Output Min Duty Cycle

Max

Output Max Duty Cycle

Ignition key input Settings

Ignition Key ADC input

https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~analog_inputs

Ignition Key ADC Divider

Outputs

Output

Select a pin to use for PWM or on-off output.
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~outputs

Output mode

Output

Select a pin to use for PWM or on-off output.
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~outputs

Output mode

Prime duration

on IGN voltage detection turn fuel pump on to build fuel pressure

Output

Select a pin to use for PWM or on-off output.
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~outputs

Output mode

Pulse Mode

Treat milliseconds value as duty cycle value, i.e. 0.5ms would become 50%

Pulse duration

Duration in ms or duty cycle depending on selected mode

Pulse per Rev

Output

Select a pin to use for PWM or on-off output.
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~outputs

Output mode

On temperature

Cooling fan turn-on temperature threshold, in Celsius

Off temperature

Cooling fan turn-off temperature threshold, in Celsius

Enable with AC

Turn on this fan when AC is on.

Disable when engine stopped

Inhibit operation of this fan while the engine is not running.

Disable above vehicle speed

Output

Select a pin to use for PWM or on-off output.
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~outputs

Output mode

On temperature

Cooling fan turn-on temperature threshold, in Celsius

Off temperature

Cooling fan turn-off temperature threshold, in Celsius

Enable with AC

Turn on this fan when AC is on.

Disable when engine stopped

Inhibit operation of this fan while the engine is not running.

Disable above vehicle speed

Require Foot On Pedal To Crank

Start/Stop Button input mode

Start Button

Starter Control

See also startStopButtonPin
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~outputs

Start cranking maximum time

Maximum time to crank starter when start/stop button is pressed

Suppress On Start Up (Ms)

Output

Select a pin to use for PWM or on-off output.
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~outputs

Output mode

Output

Select a pin to use for PWM or on-off output.
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~outputs

Pulse per km

Number of speedometer pulses per kilometer travelled.

Air Conditioning

A/C switch mode

A/C Relay

https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~outputs

A/C Relay Mode

A/C compressor delay

Delay before engaging the AC compressor. Set to 0 to engage immediately with no delay. Use this to prevent bogging at idle when AC engages.

Max RPM

Max CLT

Max TPS

RPM low threshold

Low engine speed for A/C. Larger engines can survive lower values

Pressure Low disable

value of A/C pressure in kPa/psi before that compressor is disengaged

Pressure High disable

value of A/C pressure in kPa/psi after that compressor is disengaged

A/C Pressure Enable Hysteresis

Hysterisis: if Pressure High Disable is 240kpa, and acPressureEnableHyst is 20, when the ECU sees 240kpa, A/C will be disabled, and stay disabled until 240-20=220kpa is reached

Status LEDs

Trigger error LED

This pin is used for debugging - snap a logic analyzer on it and see if it's ever high

Debug Trigger Sync

Fuel

Injection hardware

Injection Output 1

injectionPins 1
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~outputs

Injection Output 2

injectionPins 2
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~outputs

Injection Output 3

injectionPins 3
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~outputs

Injection Output 4

injectionPins 4
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~outputs

Injection Output 5

injectionPins 5
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~outputs

Injection Output 6

injectionPins 6
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~outputs

Injection Output 7

injectionPins 7
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~outputs

Injection Output 8

injectionPins 8
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~outputs

Injection Output 9

injectionPins 9
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~outputs

Injection Output 10

injectionPins 10
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~outputs

Injection Output 11

injectionPins 11
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~outputs

Injection Output 12

injectionPins 12
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~outputs

Injection configuration

Injection

Mode

Single coil = distributor
Individual coils = one coil per cylinder (COP, coil-near-plug), requires sequential mode
Wasted spark = Fires pairs of cylinders together, either one coil per pair of cylinders or one coil per cylinder
Two distributors = A pair of distributors, found on some BMW, Toyota and other engines
set ignition_mode X

Alpha-N uses IAT density correction

When set to yes, it enables intake air temperature-based corrections for Alpha-N tuning strategies.

Override VE table load axis

Override the Y axis (load) value used for the VE table.
Advanced users only: If you aren't sure you need this, you probably don't need this.

Override AFR table load axis

Override the Y axis (load) value used for the AFR table.
Advanced users only: If you aren't sure you need this, you probably don't need this.

Injection timing control mode

Defines when fuel is injected relative to the intake valve opening. Options include End of Injection or other timing references.

Injector flow

This is your injector flow at the fuel pressure used in the vehicle
See units setting below

Injector flow units

Select whether to configure injector flow in volumetric flow (default, cc/min) or mass flow (g/s).

Fuel rail pressure sensor

Select which fuel pressure sensor measures the pressure of the fuel at your injectors.

Injector flow compensation mode

None = I have a MAP-referenced fuel pressure regulator
Fixed rail pressure = I have an atmosphere-referenced fuel pressure regulator (returnless, typically)
Sensed rail pressure = I have a fuel pressure sensor
HPFP fuel mass compensation = manual mode for GDI engines

Injector reference pressure

This is the pressure at which your injector flow is known.
For example if your injectors flow 400cc/min at 3.5 bar, enter 350kpa/50.7psi here.
This is gauge pressure/in reference to atmospheric.

Stoichiometric ratio

Stoichiometric ratio for your primary fuel. When Flex Fuel is enabled, this value is used when the Flex Fuel sensor indicates E0.
E0 = 14.7
E10 = 14.1
E85 = 9.9
E100 = 9.0

E100 stoichiometric ratio

Stoichiometric ratio for your secondary fuel. This value is used when the Flex Fuel sensor indicates E100, typically 9.0

Use absolute fuel pressure for dead time calculation

Cylinder Banks

Cylinder 1

Cylinder 2

Cylinder 3

Cylinder 4

Cylinder 5

Select which fuel correction bank this cylinder belongs to. Group cylinders that share the same O2 sensor 5

Cylinder 6

Select which fuel correction bank this cylinder belongs to. Group cylinders that share the same O2 sensor 6

Cylinder 7

Select which fuel correction bank this cylinder belongs to. Group cylinders that share the same O2 sensor 7

Cylinder 8

Select which fuel correction bank this cylinder belongs to. Group cylinders that share the same O2 sensor 8

Cylinder 9

Select which fuel correction bank this cylinder belongs to. Group cylinders that share the same O2 sensor 9

Cylinder 10

Select which fuel correction bank this cylinder belongs to. Group cylinders that share the same O2 sensor 10

Cylinder 11

Select which fuel correction bank this cylinder belongs to. Group cylinders that share the same O2 sensor 11

Cylinder 12

Select which fuel correction bank this cylinder belongs to. Group cylinders that share the same O2 sensor 12

Injector small-pulse correction

Small pulse correction mode

Staged injection

Enable

Secondary injector flow

This is your injector flow at the fuel pressure used in the vehicle
See units setting below

Secondary injector flow compensation mode

None = I have a MAP-referenced fuel pressure regulator
Fixed rail pressure = I have an atmosphere-referenced fuel pressure regulator (returnless, typically)
Sensed rail pressure = I have a fuel pressure sensor

Secondary injector reference pressure

This is the pressure at which your injector flow is known.
For example if your injectors flow 400cc/min at 3.5 bar, enter 350kpa here.

VE

Fuel strategy

Determines the method used for calculating fuel delivery. The following options are available:
Uses intake manifold pressure (MAP) and intake air temperature (IAT) to calculate air density and fuel requirements. This is a common strategy, especially for naturally aspirated or turbocharged engines.
Alpha-N: Uses throttle position as the primary load input for fuel calculation. This strategy is generally used in engines with individual throttle bodies or those that lack a reliable MAP signal.
MAF Air Charge: Relies on a Mass Air Flow (MAF) sensor to measure the amount of air entering the engine directly, making it effective for engines equipped with a MAF sensor.
Lua: Allows for custom fuel calculations using Lua scripting, enabling highly specific tuning applications where the other strategies don't apply.

Override VE table load axis

Override the Y axis (load) value used for the VE table.
Advanced users only: If you aren't sure you need this, you probably don't need this.

VE Table

Target AFR

Override AFR table load axis

Override the Y axis (load) value used for the AFR table.
Advanced users only: If you aren't sure you need this, you probably don't need this.

Estimated cylinder air temperature

Mode

Single coil = distributor
Individual coils = one coil per cylinder (COP, coil-near-plug), requires sequential mode
Wasted spark = Fires pairs of cylinders together, either one coil per pair of cylinders or one coil per cylinder
Two distributors = A pair of distributors, found on some BMW, Toyota and other engines
set ignition_mode X

Increase rate limit

Maximum allowed rate of increase allowed for the estimated charge temperature

Decrease rate limit

Maximum allowed rate of decrease allowed for the estimated charge temperature

Low RPM/Low TPS

Low RPM/High TPS

High RPM/Low TPS

High RPM/High TPS

Low flow coefficient

Heat transfer coefficient at zero flow.
0 means the air charge is fully heated to the same temperature as CLT.
1 means the air charge gains no heat, and enters the cylinder at the temperature measured by IAT.

High flow coefficient

Max air flow

High flow point for heat transfer estimation.
Set this to perhaps 50-75% of your maximum airflow at wide open throttle.

Baro Correction

MAP Estimate

Warmup enrichment

Intake air temperature fuel Multiplier

Coasting Fuel Cutoff Settings

Enable Coasting Fuel Cutoff

This setting disables fuel injection while the engine is in overrun, this is useful as a fuel saving measure and to prevent back firing.

No cut below CLT

Fuel cutoff is disabled when the engine is cold.

RPM cut fuel above

This sets the RPM above which fuel cut is active.

RPM restore fuel below

This sets the RPM below which fuel cut is deactivated, this prevents jerking or issues transitioning to idle

Vehicle speed cut above

Above this speed, allow DFCO. Use this to prevent jerkiness from fuel enable/disable in low gears.

Vehicle speed restore below

Below this speed, disable DFCO. Use this to prevent jerkiness from fuel enable/disable in low gears.

Cut fuel below TPS

Throttle position below which fuel cut is active. With an electronic throttle enabled, this checks against pedal position.

Cut fuel below MAP

MAP value above which fuel injection is re-enabled.

Fuel cut delay

Delay before cutting fuel. Set to 0 to cut immediately with no delay. May cause rumbles and pops out of your exhaust...

Ignition retard during cut

Retard timing by this amount during DFCO. Smooths the transition back from fuel cut. After fuel is restored, ramp timing back in over the period specified.

After cut timing ramp-in time

Smooths the transition back from fuel cut. After fuel is restored, ramp timing back in over the period specified.

Short term fuel trim/Closed loop

Short term fuel trim

Enables lambda sensor closed loop feedback for fuelling.

Minimum CLT

Startup delay

Time after startup before closed loop operation is allowed.

After DFCO delay

Pause closed loop fueling after deceleration fuel cut occurs. Set this to a little longer than however long is required for normal fueling behavior to resume after fuel cut.

Detect Tuning and Suspend

Minimum AFR for learning

Below this AFR, correction is paused

Maximum AFR for learning

Above this AFR, correction is paused

Adjustment deadband

When close to correct AFR, pause correction. This can improve stability by not changing the adjustment if the error is extremely small, but is not required.

Ignore error magnitude

If enabled, adjust at a constant rate instead of a rate proportional to the current lambda error. This mode may be easier to tune, and more tolerant of sensor noise.

Idle region RPM

Below this RPM, the idle region is active, idle+300 would be a good value

Overrun region load

Below this engine load, the overrun region is active
When tuning by MAP the units are kPa/psi, e.g. 30 would mean 30kPa. When tuning TPS, 30 would be 30%

Power region load

Above this engine load, the power region is active
When tuning by MAP the units are kPa/psi

Max remove

Maximum % that the long term fuel trim can remove

Max remove

Maximum % that the long term fuel trim can remove

Max remove

Maximum % that the long term fuel trim can remove

Max remove

Maximum % that the long term fuel trim can remove

Long term fuel trims

Gathering Data

Enables lambda sensor long term fuel corrections data gathering into LTFT trim tables

Time const for Idle region

Commonly referred as Integral gain.
Time constant for correction while in this cell: this sets responsiveness of the closed loop correction. A value of 30.0 means it will try to make most of the correction within 30 seconds, and a value of 300.0 will try to correct within 5 minutes.
Lower values makes the correction more sensitive, higher values slow the correction down. 1

Time const for Overrun region

Commonly referred as Integral gain.
Time constant for correction while in this cell: this sets responsiveness of the closed loop correction. A value of 30.0 means it will try to make most of the correction within 30 seconds, and a value of 300.0 will try to correct within 5 minutes.
Lower values makes the correction more sensitive, higher values slow the correction down. 2

Time const for Power region

Commonly referred as Integral gain.
Time constant for correction while in this cell: this sets responsiveness of the closed loop correction. A value of 30.0 means it will try to make most of the correction within 30 seconds, and a value of 300.0 will try to correct within 5 minutes.
Lower values makes the correction more sensitive, higher values slow the correction down. 3

Time const for Cruise region

Commonly referred as Integral gain.
Time constant for correction while in this cell: this sets responsiveness of the closed loop correction. A value of 30.0 means it will try to make most of the correction within 30 seconds, and a value of 300.0 will try to correct within 5 minutes.
Lower values makes the correction more sensitive, higher values slow the correction down. 4

Max add

Maximum % that the long term fuel trim can add

Max remove

Maximum % that the long term fuel trim can remove

Learning deadband

When close to correct AFR, pause correction. This can improve stability by not changing the adjustment if the error is extremely small, but is not required.

Apply Correction

Apply LTFT trims into fuel calculation on top of VE table.
We do not adjust VE table automatically, please click 'Apply to VE' if you want to adjust your VE tables and reset trims.

Long Term Fuel Trim Bank 1

Long Term Fuel Trim Bank 2

Injection Timing

Accel/Decel Enrichment

Accel Enrichment Mode

Selects the acceleration enrichment strategy.

Detect Tuning and Suspend

Length

How long to look back for TPS-based acceleration enrichment. Increasing this time will trigger enrichment for longer when a throttle position change occurs.

Inhibit closed loop fuel after accel

Pause closed loop fueling after acceleration fuel occurs. Set this to a little longer than however long is required for normal fueling behavior to resume after fuel accel.

Accel Activation Threshold

Maximum change delta of TPS percentage over the 'length'. Actual TPS change has to be above this value in order for TPS/TPS acceleration to kick in.

Decel Threshold

For decel we simply multiply delta of TPS and tFor decel we do not use table?!

Fraction Period

A delay in cycles between fuel-enrich. portions

Wall fueling model type

Should we use tables to vary tau/beta based on CLT/MAP, or just with fixed values?

evaporation time constant / tau

Length of time the deposited wall fuel takes to dissipate after the start of acceleration.

added to wall coef / beta

0 = No fuel settling on port walls 1 = All the fuel settling on port walls setting this to 0 disables the wall wetting enrichment.

TPS/TPS acceleration extra fuel

Mode

Single coil = distributor
Individual coils = one coil per cylinder (COP, coil-near-plug), requires sequential mode
Wasted spark = Fires pairs of cylinders together, either one coil per pair of cylinders or one coil per cylinder
Two distributors = A pair of distributors, found on some BMW, Toyota and other engines
set ignition_mode X

Transient RPM correction

Predictive Map Blend Duration

Ignition

Ignition settings

Spark

Mode

Single coil = distributor
Individual coils = one coil per cylinder (COP, coil-near-plug), requires sequential mode
Wasted spark = Fires pairs of cylinders together, either one coil per pair of cylinders or one coil per cylinder
Two distributors = A pair of distributors, found on some BMW, Toyota and other engines
set ignition_mode X

Spark hardware latency correction

Compensates for trigger delay due to belt stretch, or other electromechanical issues. beware that raising this value advances ignition timing!

Individually wired Wasted Spark

This is needed if your coils are individually wired (COP) and you wish to use batch ignition (Wasted Spark).

Override ignition table load axis

Override the Y axis (load) value used for the ignition table.
Advanced users only: If you aren't sure you need this, you probably don't need this.

Timing Mode

Dynamic uses the timing map to decide the ignition timing
Static timing fixes the timing to the value set below (only use for checking static timing with a timing light).

Fixed Timing

Fixed timing, useful for TDC testing

Ignition Output Mode

Ignition Output 1

ignitionPins 1
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~outputs

Ignition Output 2

ignitionPins 2
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~outputs

Ignition Output 3

ignitionPins 3
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~outputs

Ignition Output 4

ignitionPins 4
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~outputs

Ignition Output 5

ignitionPins 5
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~outputs

Ignition Output 6

ignitionPins 6
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~outputs

Ignition Output 7

ignitionPins 7
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~outputs

Ignition Output 8

ignitionPins 8
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~outputs

Ignition Output 9

ignitionPins 9
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~outputs

Ignition Output 10

ignitionPins 10
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~outputs

Ignition Output 11

ignitionPins 11
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~outputs

Ignition Output 12

ignitionPins 12
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~outputs

Ignition advance

Warmup timing correction

Ignition Intake Air Temp correction

Dwell

Multispark

Enable multiple sparks

Maximum engine speed

Disable multispark above this engine speed.

Fire sparks for this angle duration

This parameter sets the latest that the last multispark can occur after the main ignition event. For example, if the ignition timing is 30 degrees BTDC, and this parameter is set to 45, no multispark will ever be fired after 15 degrees ATDC.

Maximum extra spark count

Configures the maximum number of extra sparks to fire (does not include main spark)

Spark duration

How long to wait for the spark to fire before recharging the coil for another spark.

Subsequent spark dwell

This sets the dwell time for subsequent sparks. The main spark's dwell is set by the dwell table.

Software Knock

Knock sensing

Cylinder Bore

Cylinder diameter in mm

Estimated Knock Frequency

Estimated knock frequency, ignore cylinderBore if this one > 0

Detection mode

Second harmonic (aka double) is usually quieter background noise

Detection Window Start

Sampling Duration

Enable Knock Spectrogram

Available via TS Plugin see https://rusefi.com/s/knock

Enable Knock Spectrogram Filter

Knock Spectrum Sensitivity

Cylinder 1

Cylinder 2

Cylinder 3

Cylinder 4

Cylinder 5

Cylinder 6

Cylinder 7

Cylinder 8

Cylinder 9

Cylinder 10

Cylinder 11

Cylinder 12

Retard Aggression

Ignition timing to remove when a knock event occurs. Advice: 5% (mild), 10% (turbo/high comp.), 15% (high knock, e.g. GDI), 20% (spicy lump),

Retard Reapply Rate

After a knock event, reapply timing at this rate.

Fuel Trim Aggression

Fuel to odd when a knock event occurs. Advice: 5% (mild), 10% (turbo/high comp.), 15% (high knock, e.g. GDI), 20% (spicy lump),

Fuel Trim Reapply Rate

After a knock event, reapply fuel at this rate.

Fuel Trim

Fuel trim when knock, max 30%

Suppress Min Tps

Below TPS value all knock suppression will be disabled.

Max knock retard

Cranking

Cranking Settings

Cranking RPM limit

This sets the RPM limit below which the ECU will use cranking fuel and ignition logic, typically this is around 350-450rpm.
set cranking_rpm X

Injection mode

Fuel Source For Cranking

For cranking either use the specified fixed base fuel mass, or use the normal running math (VE table).

Timing Advance mode

Fixed cranking advance

Ignition advance angle used during engine cranking, 5-10 degrees will work as a base setting for most engines.
There is tapering towards running timing advance
set cranking_timing_angle X

Fixed Cranking Dwell

Dwell duration while cranking

Flood clear

When enabled if TPS is held above 95% no fuel is injected while cranking to clear excess fuel from the cylinders.

Faster engine spin-up

If enabled, try to fire the engine before a full engine cycle has been completed using RPM estimated from the last 90 degrees of engine rotation. As soon as the trigger syncs plus 90 degrees rotation, fuel and ignition events will occur. If disabled, worst case may require up to 4 full crank rotations before any events are scheduled.

Use Advance Corrections for cranking

This enables the various ignition corrections during cranking (IAT, CLT and PID idle).
You probably don't need this.

Separate Flex Fuel cranking table

Enable a second cranking table to use for E100 flex fuel, interpolating between the two based on flex fuel sensor.

After start enrichment

Priming fuel pulse

Priming delay

Delay to allow fuel pressure to build before firing the priming pulse.

Cranking Cycle Base Fuel

Cranking Coolant Temperature Multiplier

Cranking TPS Multiplier

Idle

Idle settings

Idle control mode

See also idleRpmPid

TPS threshold

Below this throttle position, the engine is considered idling. If you have an electronic throttle, this checks accelerator pedal position instead of throttle position, and should be set to 1-2%.

RPM upper limit

How far above idle speed do we consider idling, i.e. coasting detection threshold.
For example, if target = 800, this param = 200, then anything below 1000 RPM is considered idle.

RPM deadzone

If the RPM closer to target than this value, disable closed loop idle correction to prevent oscillation

Max vehicle speed

Above this speed, disable closed loop idle control. Set to 0 to disable (allow closed loop idle at any speed).

A/C adder

Additional idle % while A/C is active

A/C RPM target

Idle target speed when A/C is enabled. Some cars need the extra speed to keep the AC efficient while idling.

Fan #1 adder

Additional idle % when fan #1 is active

Fan #2 adder

Additional idle % when fan #2 is active

P-factor

I-factor

D-factor

Min

Output Min Duty Cycle

Max

Output Max Duty Cycle

iTerm Min

iTerm min value

iTerm Max

iTerm max value

PID Extra for low RPM

Increases PID reaction for RPM

Use IAC PID Multiplier Table

This flag allows to use a special 'PID Multiplier' table (0.0-1.0) to compensate for nonlinear nature of IAC-RPM controller

Separate idle ignition table

This activates a separate ignition timing table for idle conditions, this can help idle stability by using ignition retard and advance either side of the desired idle speed. Extra advance at low idle speeds will prevent stalling and extra retard at high idle speeds can help reduce engine power and slow the idle speed.

Use idle ignition table while coasting

Separate idle VE table

This activates a separate fuel table for Idle, this allows fine tuning of the idle fuelling.

Override Idle VE table load axis

Allows you to change the default load axis used for the VE table, which is typically MAP (manifold absolute pressure).

Ramp target on return to idle

Ramp the idle target down from the entry threshold over N seconds when returning to idle. Helps prevent overshooting (below) the idle target while returning to idle from coasting.

Ramp target duration

idle return target ramp duration

Separate idle tables for cranking taper

This uses separate ignition timing and VE tables not only for idle conditions, also during the postcranking-to-idle taper transition (See also afterCrankingIACtaperDuration).

Separate coasting idle table

Override the IAC position during overrun conditions to help reduce engine breaking, this can be helpful for large engines in light weight cars or engines that have trouble returning to idle.

Dashpot coasting-to-idle Initial idle Adder

This value is an added for base idle value. Idle Value added when coasting and transitioning into idle.

Dashpot coasting-to-idle Hold time

How long initial idle adder is held before starting to decay.

Dashpot coasting-to-idle Decay time

How long it takes to remove initial IAC adder to return to normal idle.

Idle hardware

Use Stepper

This setting should only be used if you have a stepper motor idle valve and a stepper motor driver installed.

Idle Solenoid Primary output

https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~outputs

Double Solenoid Mode

Subaru/BMW style where default valve position is somewhere in the middle. First solenoid opens it more while second can close it more than default position.

Idle Solenoid Secondary output

Some Subaru and some Mazda use double-solenoid idle air valve
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~outputs

Idle Solenoid output(s) Mode

Idle Solenoid Frequency

Drive stepper with dual H bridges

If enabled we use two H-bridges to drive stepper idle air valve

Drive stepper with PushPull outputs

If enabled we use four Push-Pull outputs to directly drive stepper idle air valve coils

Stepper reaction time

Stepper total steps

Stepper parking extra steps, %

Force parking every restart

Idle Stepper Dir Pin Mode

Idle Stepper Enable Pin Mode

Inverted driver pins

Enable if DC-motor driver (H-bridge) inverts the signals (eg. RZ7899 on Hellen boards)

No1 Direction #1

No1 Direction #2

No1 Control

Acts as EN pin in two-wire mode

No1 Disable

No2 Direction #1

No2 Direction #2

No2 Control

Acts as EN pin in two-wire mode

No2 Disable

Stepping Mode

For micro-stepping, make sure that PWM frequency (etbFreq) is high enough

Min. Duty Cycle

Use to limit the current when the stepper motor is idle, not moving (100% = no limit)

Max. Duty Cycle

Use to limit the max.current through the stepper motor (100% = no limit)

Idle Target RPM

Idle position by Engine Temperature

Cranking Idle Valve Curve

ETB idle maximum angle

This sets the range of the idle control on the ETB. At 100% idle position, the value specified here sets the base ETB position. Can also be interpreted as the maximum allowed TPS% Opening for Idle Control.

Idle Valve Crank-to-Run Taper

Closed-loop idle timing

Enable closed loop idle ignition timing

Proportional gain

Integral gain

Derivative gain

Min adjustment (retard)

Output Min Duty Cycle

Max adjustment (advance)

Output Max Duty Cycle

Soft entry time

When entering idle, and the PID settings are aggressive, it's good to make a soft entry upon entering closed loop

Advanced

Sensors

Analog Input Settings

Grab baro value from MAP

Read MAP sensor on ECU start-up to use as baro value.

CLT Sensor

Input channel

This is the processor pin that your fuel level sensor in connected to. This is a non standard input so will need to be user defined.
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~analog_inputs

Lowest temperature

these values are in Celcius

Resistance @ LT

Middle temperature

Resistance @ MT

Highest temperature

Resistance @ HT

Linear characteristic

IAT Sensor

Input channel

This is the processor pin that your fuel level sensor in connected to. This is a non standard input so will need to be user defined.
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~analog_inputs

Lowest temperature

these values are in Celcius

Resistance @ LT

Middle temperature

Resistance @ MT

Highest temperature

Resistance @ HT

Linear characteristic

TPS

Primary sensor input

First throttle body, first sensor. See also pedalPositionAdcChannel
Analog TPS inputs have 200Hz low-pass cutoff.
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~analog_inputs

Primary closed

Closed voltage for primary throttle position sensor

Primary open

Fully opened voltage for primary throttle position sensor

Secondary sensor input

First throttle body, second sensor.
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~analog_inputs

Secondary closed

Closed voltage for secondary throttle position sensor

Secondary open

Fully opened voltage for secondary throttle position sensor

Primary sensor

Second throttle body position sensor, single channel so far
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~analog_inputs

ETB SENT type

If you have SENT TPS sensor please select type. For analog TPS leave None

TPS/PPS minimum valid value

TPS error detection: what throttle % is unrealistically low?
Also used for accelerator pedal error detection if so equipped.

TPS/PPS maximum valid value

TPS error detection: what throttle % is unrealistically high?
Also used for accelerator pedal error detection if so equipped.

TPS/PPS Error Detection Threshold

TPS/PPS error threshold

Ford/Toyota redundant TPS mode

On some Ford and Toyota vehicles one of the throttle sensors is not linear on the full range, i.e. in the specific range of the positions we effectively have only one sensor.

Secondary TPS maximum

For Ford TPS, use 53%. For Toyota ETCS-i, use ~65%

Accelerator pedal

Accelerator position primary sensor

Electronic throttle pedal position first channel
See throttlePedalPositionSecondAdcChannel for second channel
See also tps1_1AdcChannel
See throttlePedalUpVoltage and throttlePedalWOTVoltage
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~analog_inputs

Up (idle) voltage

Down (WOT) voltage

Pedal in the floor

Accelerator position secondary sensor

Electronic throttle pedal position input
Second channel
See also tps1_1AdcChannel
See throttlePedalSecondaryUpVoltage and throttlePedalSecondaryWOTVoltage
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~analog_inputs

Up (idle) voltage

Down (WOT) voltage

Pedal in the floor

Accelerator Exp Average

A higher alpha (closer to 1) means the EMA reacts more quickly to changes in the data.
'100%' means no filtering, 98% would be some filtering.

TPS/PPS minimum valid value

TPS error detection: what throttle % is unrealistically low?
Also used for accelerator pedal error detection if so equipped.

TPS/PPS maximum valid value

TPS error detection: what throttle % is unrealistically high?
Also used for accelerator pedal error detection if so equipped.

TPS/PPS Error Detection Threshold

TPS/PPS error threshold

Ford/Toyota redundant PPS mode

On some Ford and Toyota vehicles one of the pedal sensors is not linear on the full range, i.e. in the specific range of the positions we effectively have only one sensor.

Secondary PPS maximum

For Toyota ETCS-i, use ~69%

MAP sensor

Low value threshold

kPa/psi value which is too low to be true

High value threshold

kPa/psi value which is too high to be true

Measure Map Only In One Cylinder

Useful for individual intakes

Cylinder count to sample MAP

This many MAP samples are used to estimate the current MAP. This many samples are considered, and the minimum taken. Recommended value is 1 for single-throttle engines, and your number of cylinders for individual throttle bodies.

MAP sensor ExpAverage dampening

A higher alpha (closer to 1) means the EMA reacts more quickly to changes in the data.
'1' means no filtering, 0.98 would be some filtering.

MAP type

MAP value low point

kPa/psi value at low volts

MAP voltage low point

MAP voltage for low point

MAP value high point

kPa/psi value at high volts

MAP voltage high value

MAP voltage for low point

MAP sampling

Window averaging

Baro sensor

Low Value

kPa/psi value at low volts

High Value

kPa/psi value at high volts

Type

AFR, WBO, EGO - whatever you like to call it

LPS2x Baro SCL

LPS2x Baro SDA

MAF sensor

MAF ADC input

https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~analog_inputs

MAF 2 ADC input

https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~analog_inputs

MAF filter parameter

larger value = larger intake manifold volume

CAN O2 sensors

UEGO type

RusEFI WBO ID

AEM ID

Enable CAN Wideband

AEM X-Series or rusEFI Wideband

Wideband CAN bus

Select which bus the wideband controller is attached to.

Smoothing Factor

A higher alpha (closer to 1) means the EMA reacts more quickly to changes in the data.
'1' means no filtering, 0.98 would be some filtering.

Force O2 sensor heating

If enabled, don't wait for engine start to heat O2 sensors.
WARNING: this will reduce the life of your sensor, as condensation in the exhaust from a cold start can crack the sensing element.

UEGO type

RusEFI WBO ID

AEM ID

Analog O2 sensor

Smoothing Factor

A higher alpha (closer to 1) means the EMA reacts more quickly to changes in the data.
'1' means no filtering, 0.98 would be some filtering.

Type

AFR, WBO, EGO - whatever you like to call it

low voltage

low value

high voltage

high value

Correction

EGO value correction

Input channel

This is the processor pin that your fuel level sensor in connected to. This is a non standard input so will need to be user defined.
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~analog_inputs

Input channel

This is the processor pin that your fuel level sensor in connected to. This is a non standard input so will need to be user defined.
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~analog_inputs

rusEFI Wideband Tools

Wideband CAN bus

Select which bus the wideband controller is attached to.

Target device HW ID

Required CAN ID

Sensor type

Auto remap on start

rusEFI WBO hardware index

Auto remap on start

rusEFI WBO hardware index

SENT protocol inputs

SENT Input #1

sentInputPins 1
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~sent_inputs

CAN-bus

CAN Bus Communication

CAN dash type

Inertia Measurement Unit

CAN read enabled

enable can_read/disable can_read

CAN write enabled

enable can_write/disable can_write. See also can1ListenMode

Enable rusEFI CAN broadcast

CAN broadcast using custom rusEFI protocol

rusEFI CAN data bus

rusEFI CAN data base address

rusEFI CAN data address type

Use 11 bit (standard) or 29 bit (extended) IDs for rusEFI verbose CAN format.

rusEFI CAN data period

CANbus thread period in ms

Board state broadcast

Send out board statistics

Verbose Can

Print incoming and outgoing first bus CAN messages in rusEFI console

Bitrate

RX pin

TX pin

Allow OpenBLT

Allow OpenBLT on Secondary CAN

Verbose Can2

Print incoming and outgoing second bus CAN messages in rusEFI console

Bitrate

RX pin

TX pin

Allow OpenBLT

Allow OpenBLT on Secondary CAN

CAN Vehicle Speed

Enable CAN VSS

Read VSS from OEM CAN bus according to selected CAN vehicle configuration.

CAN VSS type

CAN VSS scaling

Scale the reported vehicle speed value from CAN. Example: Parameter set to 1.1, CAN VSS reports 50kph, ECU will report 55kph instead.

CAN O2 sensors

Enable CAN Wideband

AEM X-Series or rusEFI Wideband

Wideband CAN bus

Select which bus the wideband controller is attached to.

Smoothing Factor

A higher alpha (closer to 1) means the EMA reacts more quickly to changes in the data.
'1' means no filtering, 0.98 would be some filtering.

Force O2 sensor heating

If enabled, don't wait for engine start to heat O2 sensors.
WARNING: this will reduce the life of your sensor, as condensation in the exhaust from a cold start can crack the sensing element.

CAN EGT sensors

CAN EGT (AEM X series of RusEFI)

AEM X-Series EGT gauge kit or rusEFI EGT sensor from Wideband controller

CAN MS IO-Box Settings

Base CAN identifier

VSS settings

Controller

ECU stimulator

Trigger Simulator

trigger stimulator output #1

Each rusEFI piece can provide synthetic trigger signal for external ECU. Sometimes these wires are routed back into trigger inputs of the same rusEFI board.
See also directSelfStimulation which is different. 1

trigger stimulator output mode #1

triggerSimulatorPinModes 1

trigger stimulator output #2

Each rusEFI piece can provide synthetic trigger signal for external ECU. Sometimes these wires are routed back into trigger inputs of the same rusEFI board.
See also directSelfStimulation which is different. 2

trigger stimulator output mode #2

triggerSimulatorPinModes 2

camSimulatorPin

camSimulatorPinMode

Logic input channel 1

logicAnalyzerPins 1
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~event_inputs

Logic input channel 2

logicAnalyzerPins 2
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~event_inputs

Logic input channel 3

logicAnalyzerPins 3
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~event_inputs

Logic input channel 4

logicAnalyzerPins 4
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~event_inputs

Engine chart size

Bench Test & Commands

Count

How many test bench pulses do you want

On Time

Duration of each test pulse

Off Time

Time between bench test pulses

Injector test

On Time

Duration of each test pulse

Off Time

Time between bench test pulses

Base Tunes

rusEFI Console Settings

Engine Sniffer Threshold

Engine sniffer would be disabled above this rpm
set engineSnifferRpmThreshold X

SD Card

SD Card Logging

SPI

Always start in Logging mode

Write SD card log even when powered by USB

SD logger rate

Rate the ECU will log to the SD card, in hz (log lines per second).

SD logger mode

'Trigger' mode will write a high speed log of trigger events (warning: uses lots of space!). 'Normal' mode will write a standard MLG of sensors, engine function, etc. similar to the one captured in TunerStudio.

Connection

uartConsoleSerialSpeed

Band rate for primary TTL

enableKline

tunerStudioSerialSpeed

Secondary TTL channel baud rate

TX pin

RX pin

All IO 1/3

trigger stimulator output #1

Each rusEFI piece can provide synthetic trigger signal for external ECU. Sometimes these wires are routed back into trigger inputs of the same rusEFI board.
See also directSelfStimulation which is different. 1

trigger stimulator output #2

Each rusEFI piece can provide synthetic trigger signal for external ECU. Sometimes these wires are routed back into trigger inputs of the same rusEFI board.
See also directSelfStimulation which is different. 2

camSimulatorPin

tle6240_cs

tle6240 SPI

Tachometer output

https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~outputs

Narrowband O2 heater output

On-off O2 sensor heater control. 'ON' if engine is running, 'OFF' if stopped or cranking.
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~outputs

Idle Solenoid Primary output

https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~outputs

Idle Solenoid Secondary output

Some Subaru and some Mazda use double-solenoid idle air valve
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~outputs

Idle Stepper Dir

Idle Stepper Step

Idle Stepper Enable

Fuel Pump output

https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~outputs

ETB#1 Dir #1

ETB#1 Dir #2

ETB#1 Control

Acts as EN pin in two-wire mode

ETB#1 Disable

ETB#2 Dir #1

ETB#2 Dir #2

ETB#2 Control

Acts as EN pin in two-wire mode

ETB#2 Disable

SD CS Pin

Fan Pin

https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~outputs

A/C Relay

https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~outputs

Main Relay Pin

https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~outputs

Starter Relay Pin

https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~outputs

Aux ADC #1

auxAnalogInputs 1
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~analog_inputs

Aux ADC #2

auxAnalogInputs 2
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~analog_inputs

Aux ADC #3

auxAnalogInputs 3
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~analog_inputs

Aux ADC #4

auxAnalogInputs 4
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~analog_inputs

Aux ADC #5

auxAnalogInputs 5
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~analog_inputs

Aux ADC #6

auxAnalogInputs 6
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~analog_inputs

Aux ADC #7

auxAnalogInputs 7
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~analog_inputs

Aux ADC #8

auxAnalogInputs 8
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~analog_inputs

CAN RX pin

CAN TX pin

Saab CDM knock

UNUSED
Will remove in 2026 for sure
Saab Combustion Detection Module knock signal input pin
also known as Saab Ion Sensing Module

DRV8860 CS

DRV8860 CS Mode

DRV8860 MISO pin

DRV8860 SPI

All IO 2/3

Injection Output 1

injectionPins 1
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~outputs

Injection Output 2

injectionPins 2
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~outputs

Injection Output 3

injectionPins 3
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~outputs

Injection Output 4

injectionPins 4
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~outputs

Injection Output 5

injectionPins 5
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~outputs

Injection Output 6

injectionPins 6
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~outputs

Injection Output 7

injectionPins 7
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~outputs

Injection Output 8

injectionPins 8
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~outputs

Injection Output 9

injectionPins 9
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~outputs

Injection Output 10

injectionPins 10
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~outputs

Injection Output 11

injectionPins 11
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~outputs

Injection Output 12

injectionPins 12
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~outputs

auxSpeedSensorInputPin1

auxSpeedSensorInputPin 1
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~event_inputs

auxSpeedSensorInputPin2

auxSpeedSensorInputPin 2
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~event_inputs

Ignition Output 1

ignitionPins 1
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~outputs

Ignition Output 2

ignitionPins 2
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~outputs

Ignition Output 3

ignitionPins 3
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~outputs

Ignition Output 4

ignitionPins 4
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~outputs

Ignition Output 5

ignitionPins 5
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~outputs

Ignition Output 6

ignitionPins 6
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~outputs

Ignition Output 7

ignitionPins 7
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~outputs

Ignition Output 8

ignitionPins 8
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~outputs

Ignition Output 9

ignitionPins 9
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~outputs

Ignition Output 10

ignitionPins 10
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~outputs

Ignition Output 11

ignitionPins 11
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~outputs

Ignition Output 12

ignitionPins 12
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~outputs

Debug Trigger Sync

hpfpValvePin

https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~outputs

All IO 3/3

Secondary channel

triggerInputPins 2
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~event_inputs

CLT ADC input

https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~analog_inputs

IAT ADC input

https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~analog_inputs

vBatt ADC input

This is the processor input pin that the battery voltage circuit is connected to, if you are unsure of what pin to use, check the schematic that corresponds to your PCB.
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~analog_inputs

MAF ADC input

https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~analog_inputs

MAF 2 ADC input

https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~analog_inputs

AFR ADC input

https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~analog_inputs

AFR 2 ADC input

https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~analog_inputs

Baro ADC input

https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~analog_inputs

MAP ADC input

https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~analog_inputs

Vehicle Speed input

https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~event_inputs

A/C Switch

A/C button input
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~switch_inputs

Aux Fast Analog

Useful in Research&Development phase
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~analog_inputs

VVT solenoid bank 1 intake

VVT output solenoid pin for this cam 1
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~outputs

VVT solenoid bank 1 exhaust

VVT output solenoid pin for this cam 2
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~outputs

VVT solenoid bank 2 intake

VVT output solenoid pin for this cam 3
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~outputs

VVT solenoid bank 2 exhaust

VVT output solenoid pin for this cam 4
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~outputs

Aux Valve #1

auxValves 1

Aux Valve #2

auxValves 2

Start/Stop Button

See also starterControlPin
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~switch_inputs

Upshift Pin

https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~switch_inputs

Downshift Pin

https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~switch_inputs

Low-Z smart injector control

externalRusEfiGdiModule

SPI Chip Select

SPI Device

MC33816 rstb

ResetB

MC33816 flag0

MC33816 Driven

Boost voltage

Boost Voltage

Boost current target

Boost Current

Min boost time

Minimum allowed time for the boost phase. If the boost target current is reached before this time elapses, it is assumed that the injector has failed short circuit.

Max boost time (timeout)

Maximum allowed boost phase time. If the injector current doesn't reach the threshold before this time elapses, it is assumed that the injector is missing or has failed open circuit.

Peak phase current target

Peak Current

Peak phase duration

Peak phase duration

Peak phase loop off time

Peak -> Hold Bypass Time

Hold current target

Hold Current

Hold phase loop off time

Maximum injection duration

Hold phase duration

HPFP Cam Configuration

Number of lobes

If using VVT, which cam the pump is driven from

Angle of first lobe peak

Crank angle ATDC of first lobe peak

HPFP Pump Configuration

Valve Pin Mode

Valve peak current

Valve hold current

Valve hold off time

How long to deactivate power when hold current is reached before applying power again

Valve maximum duration

Maximum amount of time the solenoid can be active before assuming a programming error

Pump volume

Size of the pump chamber in cc. Typical Bosch HDP5 has a 9.0mm diameter, typical BMW N* stroke is 4.4mm.

Minimum angle

If the requested activation time is below this angle, don't bother running the pump

Activation angle

How long to keep the valve activated (in order to allow the pump to build pressure and keep the valve open on its own)
https://rusefi.com/forum/viewtopic.php?t=2192

Target decay rate

The fastest rate the target pressure can be reduced by. This is because HPFP have no way to bleed off pressure other than injecting fuel.

Proportional gain

Integral gain

iTerm Min

iTerm min value

iTerm Max

iTerm max value

HPFP Target Fuel Pressure

HPFP Pump Feed Forward

Important Details

Flybacks were removed

Rain Mode Just An Example

Traction Control ETB drop

Traction Control Timing drop

Traction Ignition Skip

useHardSkipInTraction

Experimental/Broken

can1ListenMode

ListenMode is about acknowledging CAN traffic on the protocol level. Different from canWriteEnabled

can2ListenMode

rethrowHardFault

canGpioType

I understand ECU Locking

Tune read/write password

verboseQuad

vvtBooleanForVerySpecialCases

watchOutForLinearTime

TS over CAN debug

Are you a developer troubleshooting TS over CAN ISO/TP?

consumeObdSensors

This property is useful if using rusEFI as TCM or BCM only

BRZ/FRS/GT86 pedal

Artificial Misfire

Experimental setting that will cause a misfire
DO NOT ENABLE.

Always use instant RPM

RPM is measured based on last 720 degrees while instant RPM is measured based on the last 90 degrees of crank revolution

Modeled flow idle

Max idle flow

Maximum commanded airmass for the idle controller.

turbochargerFilter

auxFrequencyFilter

useBiQuadOnAuxSpeedSensors

TODO KS mode 4569

Experimental 2

dacOutputPins1

dacOutputPins 1

dacOutputPins2

dacOutputPins 2

luaCanRxWorkaround CAN performance hack

global_can_data performance hack

Read RPM matching VSS profile

auxSpeed1Multiplier

magicNumberAvailableForDevTricks

brakeMeanEffectivePressureDifferential

Experimental 3

triggerEventsTimeoutMs

devBit0

devBit1

devBit2

devBit3

devBit4

devBit5

devBit6

devBit7

Harley Automatic Compression Release

Pin

https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~outputs

Pin 2

https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~outputs

Disable after revolutions

Disable after engine phase

During revolution where ACR should be disabled at what specific angle to disengage

Rotary

Enable Trailing Sparks

Enable secondary spark outputs that fire after the primary (rotaries, twin plug engines).

Trailing Pin 1

trailingCoilPins 1
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~outputs

Trailing Pin 2

trailingCoilPins 2
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~outputs

Trailing Pin 3

trailingCoilPins 3
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~outputs

Trailing Pin 4

trailingCoilPins 4
https://rusefi.com/docs/pinouts/hellen/uaefi/?highlight=class~outputs

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