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Thread: Shifting Too Late in a 2017 Silverado 5.3 Whipple 37" tires. 4.88 gears.

  1. #1
    Tuner in Training
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    Shifting Too Late in a 2017 Silverado 5.3 Whipple 37" tires. 4.88 gears.

    I don't know why this is screaming past 6000RPM. I set the Speed to zero and the RPM to 5200... and I must be missing something here. Any help or insight would be greatly appreciated!

    (Side note: My IAT calibration is wrong... I am reaching out to Whipple to see what it is supposed to be.)

    Thanks,
    -Josh

    202209191421_2017Silverado1500LT_5.3L.hpt
    1810pm.hpl

  2. #2
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    So I adjusted the part throttle shifts and it is better... but it still won't shift if I keep it full throttle.
    I am also seeing higher than what I expect for IAT temps.
    Any thoughts as I keep plugging away here?
    Thanks,
    -Josh

    202209211630_2017Silverado1500LT_5.3L.hpt
    SCREAM.hpl
    2SCREAM.hpl

  3. #3
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    Any thoughts on how to force earlier shifts?