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Thread: 2017 L83/6L80 swap shift mph tuning

  1. #1
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    2017 L83/6L80 swap shift mph tuning

    I would like to have my shift mph lowered, 1-2 and 3-4 takes too much mph to shift is there an easy way to do this? I have been looking at the tune but not sure what to change Thanks

  2. #2
    Tuning Addict 5FDP's Avatar
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    You need to post the tune.

    Make sure the gear ratio and tire size is correct in the gear tire wizard in the edit tab. That must be correct before anything else.
    2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.

    If you don't post your tune and logs when you have questions you aren't helping yourself.

  3. #3
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    tune

    lukeC10finaltune2020.hpt

    3;42 gears 30.5" tire

  4. #4
    Tuning Addict 5FDP's Avatar
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    Fine the upshift table and just lower the mph for that gear at whatever throttle percent you want. There is not much to it.

    If at 20-40% throttle it's taking to much speed just drop the mph by 3-5 and see if that helps.
    2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.

    If you don't post your tune and logs when you have questions you aren't helping yourself.

  5. #5
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    ok thanks

  6. #6
    Tuning Addict 5FDP's Avatar
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    You'll have to adjust the downshift table as well. Don't want the upshift and downshift at the same speed or like 1 mph different.
    2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.

    If you don't post your tune and logs when you have questions you aren't helping yourself.

  7. #7
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    so there is normal, pattern A, pattern B, and Hot how do I know what table is used?

  8. #8
    Tuning Addict 5FDP's Avatar
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    Everything is normal outside of tow/haul mode.

    You can even log the shift pattern in the scanner too if you really wanted too.
    2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.

    If you don't post your tune and logs when you have questions you aren't helping yourself.

  9. #9
    Tuner in Training
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    gotcha thanks

  10. #10
    what did you come up with after tweaking it?