EG6 Love

iTrader: (1)

I working with a GSR engine with GT35r in a 92 civic. Tuned by ill garage on ECtune with a P75 converted P28.

The following resistors have been removed from the ecu:
RP17, J4, R90, C71, J12.

Under 4000RPM the engine runs well, although at idle only, it's a bit rich most of the time at about 10.5 AFR. Often times, once in the 4500-5500RM is where my AFR's will suddenly drop to 9.9 and the car will fall on its face/cut out. Occasionally, I will be able to make it to 6500RPM where the engine will hold a steady rev and have an AFR of 9.1.

Now to add to that, if one of the above situations doesn't occur, what does happen is *** my RPM's rise above 4500 and boost increases the AFR will steadily rise and once it hits about 14 AFR I will get out of the throttle for sake of avoiding detonation.

I've been able to affect these situations above by adjusting fuel pressure and removing/installing the vacuum line.

Should I be using the vacuum line on a boosted setup?
What should base fuel pressure be?

MAP sensor only has 4.6V reference coming from the ECU (tested at ECU).
Coolant temp sensor has 5V ref and proper resistance across sensor.
IAT sensor is functioning properly.
I have swapped my chip into a P28 and got a solid CEL and car wouldn't start.
I had somewhat similar issues last year when I was on Chrome and I my car would intermitently run at 9.9AFR all the time.

Any ideas as to what could be causing these running issues, I am suspecting a wiring gremlin or ECU issue. These problems did not arise on the dyno while the tuners ECU was being used.



Thanks,

EG6 Love

iTrader: (1)

My post says that I already swapped with another P28, used my chip, and I got a solid CEL and my car wouldn't start.

TuckedB16

The chip could have just gone bad... They are known to go out everynow and then and it skews the whole map. I would have the tuner look over the map to just check if it looks okay on his end. It may not be a mechanical problem. Just my 2cents though

EG6 Love

iTrader: (1)

I have been in contact with ILL garage since they tuned my car and they have sent me 3 new chips with little improvement.