3VOLUTIONIST

Hi guys
So I just had my third decent (longer than 5km) drive in my GSR with the new Evo 7 ECU I put in (ROMID: 98640014) and whilst driving down the freeway, cruising, the car will stutter, and lose power, then all of a sudden it ill come back, and continue stuttering. Feels like a fuel cut. Any ideas? As a side note, compared to the GSR ECU, the injectors turn off almost immediately after coming off the throttle, wideband reads air practically straight away, whereas on the old ECU it wouldn't do that.

I also changed "min temp for closed loop" from 20, to what it was on the Evo 6 ECU (50)

Mods wise: 1.8L 4g93T engine, TD04-13G turbo, Evo 560cc injectors, 787 Evo VI MAF, JDM Evo 7 ECU. I havent scaled the MAF (read that theyre practically the same and it's not worth doing, not sure how much truth there is to that though, but it drove around fine yesterday). If I copy all of the Evo 6 MAF stuff over to the Evo 7 ROM, will that 'scale' it? Eg. MAF Size, scaling, smoothing, Air temp compensation, Baro compensation.

I'm not a total noob at this, but I'm no expert either.
And I'm using ECUflash & Evoscan, with an OpenPort2.0, not a 1.3, as I originally had an Evo 6 ECU that fried itself. And it seems like I'll need a 1.3 cable to log the important things like Knocksum on the Evo 7 ECU.

Also, when using ECUFlash, some tables are greyed out, like 'Knock Load', "knock Multiplier low RPM" etc. Is this normal?

Going to try and get home from uni now.. wish me luck

3VOLUTIONIST

Ok, the car drove fine all the way home after changing the MAF settings in the ECU.
My STFT's are coming up as ~125 in Evoscan 2.9, which explains why the AFR is like 10.5...

My current error codes are:

P0130- Heated oxygen sensor circuit fault (front)
P0135- Heated oxygen sensor heater circuit fault (front)
P0403- EGR Control Solenoid Circuit
P0120- TPS (main) circuit malfunction
P1500- Generator FR terminal circuit malfunction
P0105- Barometric pressure circuit malfunction

3VOLUTIONIST

Here's some screenshots of my Evoscan log. It wont actually let me upload the CSV file :/

Need to get rid of those 25% Fuel trims

wreckleford

iTrader: (2)

You have it take it out of closed loop completely or wire up a 4-wire 02 sensor.

3VOLUTIONIST

Why is my o2 sensor not compatible? It's a two wire, so its just missing the heater isn't it?

wreckleford

iTrader: (2)

The two wire is likely dead, and even if it isn't it will take forever to heat up and start reading properly. In the meantime the ECU will be getting a lean signal and increase the short term fuel trim to compensate until it maxes at +25%.

If you log o2 volts you will see that the voltage is reading like 0.1V or less.

3VOLUTIONIST

Damn
Only replaced it 12 months ago.
If I install a 4 wire, what wiring would I need to install?? My harness is a 95 Lancer GSR (2 wire from factory).

All good, did some reading, looks simple enough. So that should clear up the two o2 sensor CEL's