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Thread: 8L90e TUTD tuning on C7 Z06

  1. #1
    Tuner in Training
    Join Date
    Dec 2024
    Posts
    39

    8L90e TUTD tuning on C7 Z06

    Question for you guys , so trying to tune the A8 for the manual ( auto up shift ) for roll racing . When i drive the car in " M " it upshifts just fine at the commanded MPH but the shifting from gear to gear is laggy / hesitant . When i put in M and then bump it up to drive the car shift perfectly ( quicker /firmer ) to the point where its actually 2-3 10ths faster in the 60-130 draggy time.

    Where are the shift timing for the M mode in HPtuners ? i tried adjusting the shift timings under " Power " with no luck or change . I would be happy with copy paste the "S" D shift points at this time if that's possible. Ill post the current tune file in a bit left my labtop at home.

    Things i did change

    TUTD mph and RPM , max Line pressure bumped up to 175, all tq converter applications under 7th gear diasbled, Max tq for shifting changed to max value , timings under power at hight tq set to .25 at 100% throttle.

  2. #2