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Thread: 13 2500hd 6l90 early shift

  1. #1

    13 2500hd 6l90 early shift

    Tuning a 13 2500hd, and no mater how high I set the shift scheduling (mph and rpm) it still shifts at 3900-4k. The only way to rev higher is in manual mode. What am I missing?

  2. #2
    here is a tune file
    I guess the logs didn't save, but it was shifting right at 3900-4100 every gear
    tuned 13 2500hd.hpt