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Thread: Gas 6r140 Transmission delayed shifts

  1. #1
    Tuner in Training
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    Sep 2020
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    Gas 6r140 Transmission delayed shifts

    Looking to see if i can get some suggestions on tuning changes i can make for the delayed shifts i get at WOT. The truck is a 2016 F250 6.2. i have made some changes suggested in other threads to improve torque converter lockup which helped. the issue seems to be if i floor the truck while cruising to pass it will downshift correctly but the next upshift hangs for a couple of seconds till i either lift briefly or it finally decides to shift.

  2. #2
    Advanced Tuner JaegerWrenching's Avatar
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    Jun 2018
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    Albuquerque New Mexico
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    Quote Originally Posted by akley88 View Post
    Looking to see if i can get some suggestions on tuning changes i can make for the delayed shifts i get at WOT. The truck is a 2016 F250 6.2. i have made some changes suggested in other threads to improve torque converter lockup which helped. the issue seems to be if i floor the truck while cruising to pass it will downshift correctly but the next upshift hangs for a couple of seconds till i either lift briefly or it finally decides to shift.
    Is this a new issue post making changes or was it happening with a stock tune? Post your tune file.

  3. #3
    Tuner in Training
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    Sep 2020
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    unfortunately i have always had the delayed shift issue at wot. maybe im just expecting to much out of a work truck.
    Attached Files Attached Files

  4. #4
    Advanced Tuner JaegerWrenching's Avatar
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    Jun 2018
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    Albuquerque New Mexico
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    This is missing tons of parameters, you don't even have any adaptive tables or shifting pressure tables. Contact support and ask to have them added, use the 17-19 F250-450 diesel file as reference for requested tables.
    Quote Originally Posted by akley88 View Post
    unfortunately i have always had the delayed shift issue at wot. maybe im just expecting to much out of a work truck.

  5. #5
    Potential Tuner
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    Nov 2021
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