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Thread: Quick shift without lunging?

  1. #1
    Lifetime Member samh_08's Avatar
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    Oct 2008
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    Default Quick shift without lunging?

    I have been toying with my 6L80 tune trying to just get clean, quick, positive shifts. When I first load a fresh tune, it shifts perfect and I log the shift times that feel good.

    When I enter those values and load that tune, it shifts great for a while, then the shifts start getting lungy (best way I can describe it). I know it should be possible to have a shift feel such that you dont really feel like you're going through the windshield nor kicked back, but Im having a hard time finding the feel and KEEPING that feel.

    Am I missing something? Stock 2011 Silverado 5.3L E38 / 6L80 T43.

  2. #2
    Lifetime Member EagleMark's Avatar
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    Dec 2010
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    Default

    I'm not much help with the 6L80E trans... but if it is similar to LS1B and 4L60E what is happening is adaptive learning is fixing your tune!

    http://forum.efilive.com/showthread....Adaptive-Learn

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