Results 1 to 2 of 2

Thread: 4l80 Trans Part Throttle Shift Help?

  1. #1
    Potential Tuner
    Join Date
    Mar 2017
    Posts
    2

    4l80 Trans Part Throttle Shift Help?

    2007 6.0 LQ4 w/ 76mm turbo, 4l80e with 3200 stall and transgo hd2 shiftkit.

    Ive been having some issues with my part throttle shifts, from a dead stop going around a corner it shifts up from 1st to 2nd way to quickly and bogs the truck down, sometimes will even shift from 2-3 around a corner. Ive been messing with the trucks part throttle shift table slightly increasing the mph or the 1-2 and 2-3 but it doesnt seem to help too much? 2-3 & od shift speed adjusted.hpt

  2. #2
    Tuner
    Join Date
    Aug 2019
    Location
    Greenville, MI
    Posts
    58
    All I did for my 4L80e is copy and paste the shift scheduling to match in every table. It is all based on throttle position anyway, so at light throttle you can have it shift at a lower speed while when you're heavier on the pedal it'll wait to a higher speed before it shifts.... Like the old way with line pressures making it shift.