Ah, OK. Is it the Fenix 5.2? I'm not really familiar with it or the earlier 850's. I do have a copy of a '96 wiring diagram book HERE . In it, they do have the wiring schematics for the Fenix 5.2 and the Motronic M4.4. With a little detective work, you can find the MAP(pressure sensor) (7/81) and t...

Or just any N/A USDM M4.4 Binary did you find one? i am looking for the same, to swap out my siemens ecu for a M4.4. Then replace the MAP sensor with a 3bar one, slap a turbo on it, and see what it does At that point, just use a turbo ECU and flash/tune from there. The only thing really missing is ...

xnRS wrote: ↑24 Jan 2025, 12:23

xnRS wrote: ↑23 Jan 2025, 06:46 Also searching for 0261203077 (2.5 N/A USA) binary

Or just any N/A USDM M4.4 Binary

did you find one? i am looking for the same, to swap out my siemens ecu for a M4.4.
Then replace the MAP sensor with a 3bar one, slap a turbo on it, and see what it does

did you ever get any answers?
I have the same issue with a broken headlight

Really keen to see this get picked up again. I have a budget 850 race car with a turbo engine and manual swapped in.
Trying to get my M4.4 to flash to manual to go and do some endurance racing.
Any future progress on this would be most helpful!