Hello there. after weeks and weeks of reading in this forum here comes my first post and unfortunately it's about a major problem i currently have with my car


I installed an evo7 ECU into a Galant E30 FWD with VR4 engine (mainly the same as the DSM 1G turbo). before this conversion the engine was running for 2 weeks with a poorly remapped D20 turbo ECU (knocking like hell and leaning out instead of enriching...). so the engine and all sensors/actuators are/were working.


Now i only have ignition sparks on cylinder 2&3. when switching the pins 10&23 cylinder 1&4 are firing. switching back it's 2&3 again - so IF there would be anything wrong with the wiring to destroy one of the outputs none should work after switching back...

parts i have changed:
- CAS from the "metal cover" one (optical type) to the one with plastic cover (hall effect)
- new coil pack and transistor (before switching pins at the ECU...)
- ECU (another Evo7 JDM one)

still the same problem...

the wiring was done with the original mitsubishi wiring diagrammes for my galant and the evo7, cross-checked with pinouts/"how-to's" on the web.
cam sensor output from my combined CAS is wired to pin 88, TDC-sensor to pin 89.
Sensor signals should be fine - otherwise the ECU wouldn't give any ignition signal at all... (no static sync -> no ignition sparks, right?)


The software was untouched on both ECUs except for the immobilizer and MAF&injector scalings/latency.


I was fiddling around over 4h yesterday and for over 5 hours today and i'm on a complete dead-end...
Maybe anyone has a clue what could be wrong?
As it's the same with 2 different Evo7 ECUs i think it must be some signal (CAS?) that's not as the ECU is expecting it? Or did i overlooked anything i have to change in the ECU to make it work with my hardware?

 

Well - problem solved...

Seems like the wiring diagrammes were translated incorrectly from japanese to english or german. "Cam angle sensor" and "crank angle sensor" are interchanged. don't know if the evo or galant ones are wrong but figured out by viewing the signals on an oscilloscope...

as the ECU looks for a falling or rising signal each time the TDC-sensor is triggered, when you switch the signals it always sees a rising signal flank and "sees" always the same 2 cylinders in TDC...

after fixing that it started flawlessly and immideately after turning the key...

now i can start the real work (logging, logging and logging, then mapping logging and mapping )

but for now - the engine runs _MUCH_ smoother on the stock evo7 maps than it ever did with the stock evo3 ones...