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Thread: Fuel trims whacked at WOT

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  1. 03-21-2006 07:35 PM #1
    chrisj6
    chrisj6 is offline Senior Member
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    Yeah I have had many scans show +1 and +2 on WOT, your trims are either negative or dead on 0, which is a good bet if you have a Nelson tune, I never saw many +trims on mine! Now me trying to tune on my own on the other hand, I've seen my share of positive trims! The pcm adds the positive trims just for a safety measure.

    Chris
    2009 Silverado, HPTuners, all stock.
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  2. 05-09-2006 04:36 PM #2
    Gordy M
    Gordy M is offline Junior Member
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    I always thought the STFT went to zero above 4000 rpms and the LTFT held steady. LTFT are only updated every 10 minutes from the STFT!!!!
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