ECU LOGGING BRZ GT 86 FRS - what to look for the basic’s

[brady86]

so when i let off the throttle and cruise down while in gear and the afr is 20 i should not be concerned about that?

[steve99]

Originally Posted by brady86

so when i let off the throttle and cruise down while in gear and the afr is 20 i should not be concerned about that?

thats normal on overrun, injectors are shut off to save fuel

[brady86]

Originally Posted by steve99

thats normal on overrun, injectors are shut off to save fuel

alright I was a bit worried when i saw it go up to 20 lol but figured that was the reason. Guess its running good other then that

[Astroboy]

Where should my engine load be during idle?

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[steve99]

Originally Posted by Astroboy

Where should my engine load be during idle?

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usually about 0.2 or 0.3 thats for NA car

[Astroboy]

Originally Posted by Astroboy

Where should my engine load be during idle?

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Mine is sitting around 34 percent while at idle. Is this normal? I already swapped out the ecu 30 miles ago to. I'm turbocharged And my tuner raised my rpm so to 900 while at idle


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[steve99]

Originally Posted by Astroboy

Mine is sitting around 34 percent while at idle. Is this normal? I already swapped out the ecu 30 miles ago to. I'm turbocharged And my tuner raised my rpm so to 900 while at idle


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The load calculation is based on airflow reading from maf sensor so if idle is higher than normal then load will be higher than normal

[Astroboy]

Originally Posted by steve99

The load calculation is based on airflow reading from maf sensor so if idle is higher than normal then load will be higher than normal

Remember a while back you were helping me with cel p0018? Well I managed to swap out my ecm. Code hasn't came back on in 43 miles, thank god, but what I'm concern about is that my o2 sensor and evaporative system monitors are still incomplete. Since you know a lot about the way the ecu and p0018 work on this car, I was wondering you can help me with my issue

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[steve99]

Originally Posted by Astroboy

Remember a while back you were helping me with cel p0018? Well I managed to swap out my ecm. Code hasn't came back on in 43 miles, thank god, but what I'm concern about is that my o2 sensor and evaporative system monitors are still incomplete. Since you know a lot about the way the ecu and p0018 work on this car, I was wondering you can help me with my issue

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If your turbo with ecutek, the ecutek software re-purposes the evap sensor and sometimes the rear 02 sensor for the flex fuel sensor.

The tuner may have done this.

If these are re-purposed or disabled ie the P0420 cat efficience cel code disabled then the readyness checks will never complete as the ecu code checks to the inputs .

not even ecutek forces readyness check to complete as far as i know

[Bzives]

I just flashed the ECU yday and seem to have an LT Fuel Trim of 10.15% Is this too high? My car is stock Except for the TRD intake..

Brent

[steve99]

Originally Posted by Bzives

I just flashed the ECU yday and seem to have an LT Fuel Trim of 10.15% Is this too high? My car is stock Except for the TRD intake..

Brent

If the ltft is only high at or around idle that likely ok if its off 10% all the time even at higher rpm that probably not the best. Usually it an indication intake issue (ie intake changed without re-scaling maf) or exhaust leak especially high positive ltft.


TRD intakes usually pretty close to stock maf scaling wise. It not unusual for ltft to be 8% or so on a stock car.

[Bzives]

Ok I'll keep an eye on it, that 10 percent did happen to be at idle. Thanks for the info.

[randomthoughts]

I am hitting -1.3 flkc in 3rd gear pull between 6100 and 6500 rpm, is that bad?

http://www.datazap.me/u/randomthough...10-105-115-113

[freerunner]

If IAM/advance multiplier stays at 1, nothing to worry about.