rusefi.com

Hello ,
After having tried to build frankenso with an average success, I went on speeduino.

I drove it for a year and it drives well with speeduino, but I wanted to come back to rusefi.

I bought UAEFI and after making an adaptation harness, I was finally able to start my car.

There was a big loss of synchronisation.

I soldered two resistors of 4K7 ohms between VR1+ and VR1- also between VR2+ and VR2-.
The car runs very well at idle, I have not yet been driven.

Thanks to the developers, who allow noob like me to have fun.

Sincerely, Cyrille.

cyrille wrote: ↑

Sun Mar 17, 2024 5:41 pm

I soldered two resistors of 4K7 ohms between VR1+ and VR1- also between VR2+ and VR2-.
The car runs very well at idle, I have not yet been driven.

https://github.com/rusefi/uaefi/issues/57

Do you have a table of which UAEFI pin goes where?

Good evening

I am not sure I understand your request.

My English is not very good.

I link to the file I used.

https://rusefi.com/docs/pinouts/hellen/uaefi/

I've put my tune on line

Do you have or can you contribute a complete list of which uaEFI pin exactly goes to which B135 B137 pin exactly? That would allow me to make a an adapter board for uaEFI.

Of course

I'll do this to you as soon as possible.

I have a lot of work right now, so it's going to take a little bit of time.

Hello,
I've done about 500 kms with the car and UAEFI, it works pretty well, I'm happy.

It's time to finish wiring up the ECU completely, I'm having a few problems finishing it.

I can't get the lap counter to work, I've tried several exits but with no effect.

I've wired the clutch pedal switch to D2 button. When I press the pedal, the VE gauge indicate 0 and the car stalls.

Another problem is that in tunerstudio, the yellow "warning" light comes on as soon as I leave idle.
One last question, I would like to wire the AC button on D10, my question is: knowing that my AC button send a voltage of 12v, can I wire it like that on D10 or that I install a voltage regulator to go down to 5V, like on speeduino?

Thank you for your help, I hope I've made myself clear.
If I need any further information or have forgotten anything, I'll be happy to answer.

cyrille wrote: ↑

Thu Apr 04, 2024 5:16 pm

Another problem is that in tunerstudio, the yellow "warning" light comes on as soon as I leave idle.

Please add another 992 words to describe that warning in more detail since a picture is not really an option.

Lap timer? Again need another 997 works to help me understand what do you mean.

I'll try to describe one thing at a time, it'll be easy to read for me.

I tried to wire the tachometer output between rusefi and my combimeter B135 pin 14 of my ECU harness.

I've plugged into uaefi's B17 but I can't seem to get the tachometer working.

If you need video, let me know

Thank you

do you know if tachometer is pull-up? pull-down? or push-pull controlled? how did you choose B17? What does oscilloscope say?

I'd say pullup since it worked very well with the v0.4 speeduino board which by default has a pullup output for the tacho.

I chose B17 because it's a free output

Hello

I worked a bit to get the tachometer on the car to work, but to no succes

I measured the oscilloscope signal on the original ECU, I link it.

I measured the output signal on B17 and B10 with the oscilloscope, but I don't have a signal.

The first is UAEFI on B17 pin.

The second is the original ECU.

The third is the UAEFI 10 pin.

I would like some help to resolve this issue.

Thank you
]

Hello Anyone have an idea?

If there is any missing information, I am willing to add it, but let me know

it's usually one resistor away working, just an open question if that's a pull-up or a pull-down and what value maybe try a few combinations?

are you trying low side or high side output?

Consider asking at the rusEFI discord server

Good morning,

Thank you for your reply ,

For the moment, I tried with the OEM configuration of UAEFI, I just connected the tacho output to B10 without any other modification.

I will follow your advice and put a pullup or pulldown resistor depending on the result.

This will allow me to complete the excel file for the pin correspondence between the subaru ECU and UAEFI.

Hello,

I have attached the list of pins between the stock ecu and uaefi.

I hope this can help someone.