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Frankenso swap in the works. Car is a 94 Taurus with the SHO 3.0 and manual transmission. OEM it runs sequential fuel and EDIS wasted spark. Has a dual runner intake that switches from long to short at 4k rpm. https://images.app.goo.gl/VLLU4ejk8gF9rRbLA

Things I'm still trying to get sorted include the FSIO operation for the runner control and an error trying to configure inputs for VSS. Main relay and power to the ECU will be key operated. I have it set for full sequential fuel and spark with the low side drivers running the injectors and high side feeding individual coils. Engine currently runs a 3 tooth crank sensor (60 degrees on, 60 degrees off) and a single tooth cam sensor that's 180 degrees on then 180 degrees off (360 on, 360 off in crank degrees). I think I have the triggers set correctly based on the wiki reference. https://rusefi.com/wiki/index.php?title=Manual:Software:VVT

Currently the plan is to build an entire harness for the engine, partly to eliminate potential splice failures and to remove emissions wiring and other unnecessary circuits. At some point I want dual wbo2 sensors so necessary circuits will be added for such. Most likely this will be done using the AEM or 14point7 setup with the analog output fed to Frankenso. rusEFI dual wideband in development.

More to come as I stumble through this.

I have a question after doing some testing on the factory crank and cam sensors. They are hall effect with 0 or 12v output. No pull-up or down resistors in the OEM circuit.

1. Does this need to be fed to the MAX VR conditioner or the alternate signal inputs with a voltage divider (inputs 9 and 11)?

2. If I use the VR conditioner do I ground the minus input and configure it for a "hot" signal?

I have been attempting to get the controller and tune configured as best as possible before putting it into the car. I am running into a snag in trying to configure sensors. The Vehicle Speed Sensor causes an error when enabled. I am also needing a bit of advice on how to configure an RPM-based switch output to a relay. This will need to behave similar to Honda's VTEC, i.e. I want the relay to activate above 4000 RPM.

Please post your tune at https://rusefi.com/online/

I would use GPPWM - general purpose PWM, with "0hz" frequency turning on/off mode. Just set 0 below 4000 and 100 above 4000?

https://github.com/rusefi/rusefi/wiki/FSIO is an alternative but it's an overkill.

Tune has been posted to online. I have also updated to the latest bundle to get the flex fuel sensor configured. I will look at the GPIO options

https://rusefi.com/online/view.php?msq=408

That tune has nothing to VSS sensor but I kind of know what the issue could be

In 20 minutes new default binaries would handle VSS a bit differently maybe that would help? https://github.com/rusefi/rusefi/commit/f2e03e5ab6b7bc624e4f97c08d9eeecc06b3278e

And I had to undo that change since it is conflicting with joytstick

PA8 is a good pin for VSS input.

AndreyB wrote: ↑

Sun Jan 24, 2021 5:05 am

PA8 is a good pin for VSS input.

PA8 is on the schematic as /CS for thermocouple module 3?

I bet you do not have thermocouple 3.

there is no official solution for VSS input on Frankenso with dual channel trigger and joystick

I am not using any of the thermocouples. PA8 selected for VSS input, no errors. GPPWM configured for RPM activated output. Added bonus: the GPPWM is a 3d table so I can configure this output to respond to TPS percentage as well as RPM. OEM design would never do this.

So this pile of parts keeps getting bigger. I'm going to have to make a spreadsheet just to keep up with replacement part numbers when things eventually fail. Building a new ECU wasn't ambitious enough, so I'm building a new engine harness as well. Gives me the opportunity to eliminate splices and certain unobtainium parts, in particular the crank sensor. Additional questions will be asked along the way.