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Thread: E38 - Short Term Fuel Trims keep turning on

  1. #1
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    E38 - Short Term Fuel Trims keep turning on

    Tuning my MAF today and noticed the scanner keeps showing STFTs running even though I have the enable temp set to 284 for ST and 284 for LT. I have to manually use the scanner controls to turn trims off. Anyone else have this problem? Not sure if it is beta related or what but I've tuned many cars and never encountered this.
    2012 Chevy Cruze A6 1LT RS

    Formerly - 2004 GTO, 2002 Z28, 2007 Colorado, 2008 Silverado

  2. #2
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    Mar 2011
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    post tune?
    My setup is a 356ci with a 260/268 (212/218 at .050 lift) duration cam with aluminium corvette heads and flat top pistons running 11.3 comp. ratio. with tuned port injection and vortec crank pick up and dizzy running a 411 pcm and 60lb bosch injectors, 1.6 ratio roller rockers. For transmission its a 4l65e built with the monster in a box mega ss kit. All in a 92 chevy ext cab 4x4 pickup with a 98 cab now installed with a third door! running only e85

  3. #3
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    Here you go, mate.
    2012 Chevy Cruze A6 1LT RS

    Formerly - 2004 GTO, 2002 Z28, 2007 Colorado, 2008 Silverado

  4. #4
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    (foff667)
    Bill@HPTuners's Avatar
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    I believe You need to set the o2 readiness table to the max.
    It doesn't have to be perfect, it just needs to be done in two weeks...

    A wise man once said "google it"

  5. #5
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    Thanks, Bill. I will give that a shot.
    2012 Chevy Cruze A6 1LT RS

    Formerly - 2004 GTO, 2002 Z28, 2007 Colorado, 2008 Silverado