GM crap flash fuel trims - Page 2 - Tuning Forum

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Re: GM crap flash fuel trims
Friday, September 28, 2012 6:10 PM
Well my fuel trims are looking A LOT better now. Guess that #3 driver on the ECM was just crapping out at random the whole time. The highest I have seen the long term is -12 on the highway after I went WOT. most of the time its -7 to 7 and short term pretty much is near 0 (fluctuates with WOT which it will hit -10 sometimes for a split second after I stop accelerating). We'll see how it does when it gets hot again, today it was 75 F out. Seems to be within the 10 to -10 ok range so far!

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