Quote:
Originally Posted by dave-
All logs there are using factory sensor, first one I believe is possibly compromised due to what I mentioned about the bung being too long compared to oem depth.
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Didn't catch that somehow. Nevermind. Your fuel trims are far off.
You definately need to get your LTFT close to zero while idling, crusing with steady throttle and slow acceleration. Don't mind the fuel trims on overrun (zero throttle) though.
With 100% DI, try to drive while keeping load < 0.7 for half an hour or so. Then take your log and scale closed-loop with help from vgi's mafscaling tool:
link
Limit closed loop to 3.0V at first.
Add your new maf scale to your tune, go for another log. See if it's better.
If you're close to zero, go ahead and switch to 100% port injection.
Now look at your trims against the trims. Adjust "Port Injector Ratio BRZ" until you get the same trims like before.
Done.
EDIT: Just realized that you can't do that if your front o2 sensor doesn't work.