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Thread: s550 with an 6r80 jumps shifts on its own

  1. #1
    Tuner in Training
    Join Date
    Jun 2019
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    24

    Exclamation s550 with an 6r80 jumps shifts on its own

    Hey everyone,

    a friend of mine owns a 2015 GT Automatic, and in manual mode when he shifts from the 3rd to 4th the transmission would shift to 4th and straight to 5th on it's own.

    i have set his rpm limit higher to 8k as sometimes he wants to pushes the car a bit longer on the shift and if he shifts the car around 7600 rpm or lower it would shift to 4th and stays in it, but when he pushes the 3rd gear a bit longer it would shift to 4th and jumps on it's own to 5th gear.

    could it be the OSS table that causes this and needs to be adjusted?

    P.S ;; i'm sorry for bothering you guys with my questions since i'm using SCT for tuning my cars but you are giving me the best support needed.

  2. #2
    Yes try to motify your oss upshift tables

  3. #3
    Tuner in Training
    Join Date
    Jun 2019
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    24
    Quote Originally Posted by Eduardoc22 View Post
    Yes try to motify your oss upshift tables
    that's what i did and fingers are crossed so my guessing it should be fine, and one other thing is that some might suffer from harsher upshifts and downshifts when driving casually, so by playing with the OSS table it should make it better as well.

  4. #4
    Tuner
    Join Date
    Mar 2019
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    Tierra Verde, FL
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    This thread may help you play around with OSS tables to shift at RPM you want.

    https://forum.hptuners.com/showthrea...80+spreadsheet