Search found 703 matches

by stefanst
Sun Jul 19, 2020 12:48 am
Forum: You and your build
Topic: 93 1.6l Miata stock engine (for now)
Replies: 43
Views: 33613

Re: 93 1.6l Miata stock engine (for now)

As requested, here is more idle data. 1. CL timing only. Settings as suggested by andreika . CL_Timing_Settings.png Adding electric loads (low beams first, then interior fan) we see that the idle timing is increasing, yet the rpms drop from approx 1000 to approx 300 at the lowest point. CL_Timing_On...
by stefanst
Sat Jul 18, 2020 3:57 am
Forum: You and your build
Topic: 93 1.6l Miata stock engine (for now)
Replies: 43
Views: 33613

Re: 93 1.6l Miata stock engine (for now)

Did some more idling of the Miata. Please see attached logs/tunes. At various times I played with electrical loads and AC to see reactions to increase/decrease in load. The only part documented in the log is the AC switch, other loads can not be identified. Typical sequence of loads was: Headlights,...
by stefanst
Wed Jul 15, 2020 3:55 am
Forum: You and your build
Topic: 88 Ford Mustang - 302 V8
Replies: 4
Views: 3924

Re: 88 Ford Mustang - 302 V8

I assume that's the TFI ignition system? Distributor with vanes and a hall sensor? No crank sensor?
by stefanst
Sat Jul 11, 2020 11:58 pm
Forum: You and your build
Topic: Looking for a solution for the Subaru EG33
Replies: 154
Views: 94761

Re: Looking for a solution for the Subaru EG33

Just for diagnostics, if you flip the two inputs, does the valve go to full open instead of full closed?
by stefanst
Sat Jul 11, 2020 11:03 pm
Forum: You and your build
Topic: 93 1.6l Miata stock engine (for now)
Replies: 43
Views: 33613

Re: 93 1.6l Miata stock engine (for now)

We need to have two tunes. One for MAP and one for MAF. This is necessitated by the double use of the VE table.
Once the idle issue is all sorted, I post two sample tunes.
by stefanst
Fri Jul 10, 2020 7:05 pm
Forum: Dev: Software
Topic: Suggested Idle Improvements
Replies: 7
Views: 6084

Re: Suggested Idle Improvements

Re-stating the I-wind-down issue: Pre conditions: - Automatic idle mode is selected. P, I and D are tuned so that idle can handle all possible external loads with reasonable recovery time, but without oscillation What happens Car is in neutral, I am holding the throttle pedal, rpm is 2000rpm. Auto-i...
by stefanst
Wed Jul 08, 2020 7:19 pm
Forum: You and your build
Topic: 93 1.6l Miata stock engine (for now)
Replies: 43
Views: 33613

Re: 93 1.6l Miata stock engine (for now)

Just an update:
The car is driving very well on rusefi now. Either with the built-in MAP sensor, of just the stock AFM (MAF mode). Idle is fairly stable. AC and all other things one would expect, work.

It's time to sell!
Anybody in need of a rust-free 1993 NA6 Miata in classic red?
by stefanst
Wed Jul 08, 2020 5:43 pm
Forum: Dev: Software
Topic: Suggested Idle Improvements
Replies: 7
Views: 6084

Suggested Idle Improvements

Quick summary: We currently have two idle modes- manual and automatic. Manual is "pick a value and leave it". Automatic employs an adjustable PID strategy. For most modern-ish street-driven cars, automatic will be needed. The implementation has improved considerably over the last few month...
by stefanst
Tue Jul 07, 2020 6:11 pm
Forum: Dev: Hardware
Topic: MREAdapter72 pnp Miata MX5 NB2
Replies: 17
Views: 16665

Re: MREAdapter72 pnp Miata MX5 NB2

What pin on the main connector are we adding the Pull-down resistor (as seen in the pictures) to and what it the pulldown resistance?
by stefanst
Fri Jul 03, 2020 11:44 pm
Forum: Dev: Hardware
Topic: MREAdapter48 pnp Miata MX5 NA
Replies: 39
Views: 30879

Re: MREAdapter48 pnp Miata MX5 NA

The board seems to be a success indeed. I went for several longer rides without any issues. We have a working tune using MAP and a somewhat working tune (needs a better spark table) for running MAF. Idle compensation (closed loop idle) seems to begin working as well. The engine hasn't self-stalled i...
by stefanst
Mon Jun 08, 2020 2:19 am
Forum: User Support
Topic: rusEFI online
Replies: 19
Views: 42881

Re: rusEFI online

All I need now is a $200.00 3D PRINTED GAUGE CLUSTER https://pidashs.com/collections/pidash/ You want this to replace the stock gauge cluster? Most displays you can buy are not bright enough for a dash. A little bit of sun on them and you can't see anything. Something like this makes more sense in ...
by stefanst
Sun May 24, 2020 3:48 am
Forum: You and your build
Topic: red 2003 VVT test mule Miata NB2 #27
Replies: 240
Views: 354536

Re: red 2003 VVT test mule Miata NB2 #27

AndreyB wrote:
Tue May 19, 2020 5:36 pm
Ha, there is a crazy idea to actually drive that EGR solenoid since we have outputs! That would be low side pin 3D.
But opening EGR will rob you of power. DON"T DO IT!
by stefanst
Sun May 17, 2020 4:07 am
Forum: You and your build
Topic: Sparkle Green Supercharged 05 Miata
Replies: 7
Views: 6170

Re: Sparkle Green Supercharged 05 Miata

Nice setup. Do you have any VD pulls? There's a guy near me who keeps supercharging NA Miatas (and subsequently blowing them up) and the torque curves he gets are just hilarious.
by stefanst
Fri May 15, 2020 4:25 am
Forum: Dev: Hardware
Topic: MREAdapter48 pnp Miata MX5 NA
Replies: 39
Views: 30879

Re: MREAdapter48 pnp Miata MX5 NA

AndreyB wrote:
Thu May 14, 2020 11:34 pm

Bribes. At this point it's unclear whom to bribe and in what amount. [...]
I bribe exclusively with alcoholic beverages. Who's the bribee?
by stefanst
Thu May 14, 2020 11:27 pm
Forum: Dev: Hardware
Topic: MREAdapter48 pnp Miata MX5 NA
Replies: 39
Views: 30879

Re: MREAdapter48 pnp Miata MX5 NA

We have a working proof of concept. MRE on 48 pin board works with a cheap ($1.20) microSD adapter board from Amazon. As soon as the ECU fires up, it starts logging. rusefi with spi microSD.jpg Two requests if I may: 1. Please include footprint for microSD adapter in the next gen board design. I bel...
by stefanst
Wed May 06, 2020 9:15 pm
Forum: Dev: Hardware
Topic: MREAdapter48 pnp Miata MX5 NA
Replies: 39
Views: 30879

Re: MREAdapter48 pnp Miata MX5 NA

AndreyB wrote:
Wed May 06, 2020 12:54 am
Link to documentation added to first post

@stefanst, how many millimetres off are we?
Not sure how far we're off, but the connector should be in the exact center between the front mounting holes (PCB to case, approx 120mm apart). That would mean approx 17.5mm from each PCB mounting hole.
by stefanst
Wed May 06, 2020 5:27 pm
Forum: You and your build
Topic: PLYMOUTH DUSTER 1971 WITH BMW V12 M70
Replies: 5
Views: 5081

Re: PLYMOUTH DUSTER 1971 WITH BMW V12 M70

Needs more turbo.
by stefanst
Wed May 06, 2020 5:26 pm
Forum: You and your build
Topic: PLYMOUTH DUSTER 1971 WITH BMW V12 M70
Replies: 5
Views: 5081

Re: PLYMOUTH DUSTER 1971 WITH BMW V12 M70

YES!
I love your particular brand of insanity.
by stefanst
Thu Apr 23, 2020 5:30 pm
Forum: Dev: Hardware
Topic: MREAdapter48 pnp Miata MX5 NA
Replies: 39
Views: 30879

Re: microRusEfi48adapter pnp Miata MX5 NA

Trigger log attached.
by stefanst
Thu Apr 23, 2020 5:18 pm
Forum: Dev: Hardware
Topic: MREAdapter48 pnp Miata MX5 NA
Replies: 39
Views: 30879

Re: microRusEfi48adapter pnp Miata MX5 NA

Funny you should be talking about exciting red connectors. 1st assembled.jpg Board is assembled and being tested on the engine simulator. We are dropping sync a lot. See below: 020-04-23_13_13_10_646: EngineState: error: synchronizationPoint @ index 12 expected 4/8/0 got 4/9/0 2020-04-23_13_13_10_64...
by stefanst
Fri Apr 17, 2020 11:57 pm
Forum: Dev: Hardware
Topic: let's choose an enclosure
Replies: 121
Views: 109725

Re: let's choose an enclosure

https://github.com/rusefi/rusefi_documentation/blob/master/oem_docs/cases/BS616%20New%20Harvard%20Cover.dwg is this a 3D file or not really? Does this file provide enough data to prototype PCB outline? It's an AutoCAD drawing. PDF of the drawing is attached. Seems fairly detailed. Rusefi Case.pdf
by stefanst
Wed Apr 15, 2020 2:01 am
Forum: You and your build
Topic: red 2003 VVT test mule Miata NB2 #27
Replies: 240
Views: 354536

Re: red 2003 VVT test mule Miata NB2 #27

It may be a voltage issue. NB Miatas have a weird signal-inversion behavior during cranking, especially when cranking more slowly. Cranking drops the voltage and that may cause some funkiness with the sensor. Try a bigger/newer battery? If one is not at hand, run separate power for the sensors (12V ...
by stefanst
Mon Apr 13, 2020 11:36 pm
Forum: Dev: Hardware
Topic: MREAdapter48 pnp Miata MX5 NA
Replies: 39
Views: 30879

Re: microRusEfi48adapter pnp Miata MX5 NA

Just looking through the schematic, trying to figure this thing out. I have a few questions: - On the injectors: How are the schottkys in series with the LEDs suposed to work. Seems to me like we'll send 12V straight to the LEDs and blow them up as soon as an injector output goes low. Should the dio...
by stefanst
Sat Apr 11, 2020 2:56 am
Forum: Dev: Hardware
Topic: MREAdapter48 pnp Miata MX5 NA
Replies: 39
Views: 30879

Re: microRusEfi48adapter pnp Miata MX5 NA

I just realized that U2 and U3 won't be populated. I can order some with my next order from Digikey.
by stefanst
Sat Apr 11, 2020 2:27 am
Forum: Dev: Hardware
Topic: MREAdapter48 pnp Miata MX5 NA
Replies: 39
Views: 30879

Re: microRusEfi48adapter pnp Miata MX5 NA

First batch of 10 boards ordered. Now let's see if shipments from China still make it here.
The suspension is palpable.
by stefanst
Thu Apr 02, 2020 4:17 am
Forum: You and your build
Topic: 1991 Miata NA6
Replies: 9
Views: 7452

Re: 1991 Miata NA6

[...]About the WBO- Whats the cheapest way to go with this? I have basic soldering skills and I can make my own if need be Spartan2 OEM https://www.14point7.com/products/spartan-2-oem will fit inside the frankenso case and can be wired internally. Use the center connector on the frankenso to connec...
by stefanst
Thu Apr 02, 2020 2:02 am
Forum: You and your build
Topic: BMW V-12 1995 M-73
Replies: 17
Views: 13591

Re: BMW V-12 1995 M-73

bill wrote:
Tue Mar 31, 2020 6:39 pm
[...] now i just need another set of 2 turbos for the left bank of the V-12 [...]
Double-twins? I'm listening.....
by stefanst
Wed Apr 01, 2020 1:35 pm
Forum: You and your build
Topic: 1991 Miata NA6
Replies: 9
Views: 7452

Re: 1991 Miata NA6

Hi jpauten! Welcome to rusefi. Your project should be fairly straightforward. What are your power / boost goals? What hardware are you using? Any other mods to the engine? The GM-style MAP sensors should work well. The cheap eBay/Amazon aftermarket units are a bit hit or miss apparently. I had a few...
by stefanst
Fri Mar 27, 2020 9:59 pm
Forum: Dev: Hardware
Topic: MREAdapter48 pnp Miata MX5 NA
Replies: 39
Views: 30879

Re: microRusEfi pnp Miata MX5 NA

Crazy Striker wrote:
Fri Mar 27, 2020 7:25 pm
Yes perfect Miata time.
I'm tidying up the routing on the board (a few days), there is approx 12-14 days from ordering to delivery, add the dropshipping time to that and you have it. I will update design status as often as possible.

Gwendal
Sounds great!
by stefanst
Fri Mar 27, 2020 6:47 pm
Forum: Dev: Hardware
Topic: MREAdapter48 pnp Miata MX5 NA
Replies: 39
Views: 30879

Re: microRusEfi pnp Miata MX5 NA

It's spring, convertibles are coming out to play (maintaining proper social distancing of course). I volunteer my testing-services for this board. When will it be available for sale?