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Thread: 4L60E Transmission Torque Reduction during WOT

  1. #11
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    joecar - that's exactly how i got to this point. I read everywhere that you should set the times to 0 when you have a shift kit and then use TR to soften the shifts - which was not working.

    I should have some time later this week to test 0.001s and 0.01s.

  2. #12
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    joecar - Below is a summary of all the tests that I've run.

    Tune Entered: Desired Shift Time (s) After Save/ Re-open: Desired Shift Time (s) Shift Tested Torque Reduction Work? Notes
    0 0 1-2 NO tested multiple times, all had no TR
    0 0 2-3 NO
    0.001 0 1-2 YES TR worked even though the tune showed 0 sec after saving and re-opening
    0.01 0.0125 2-3 YES
    0.1 0.1 1-2 YES
    0.2 0.2 1-2 YES
    0.2 0.2 2-3 YES
    0.6 0.6 1-2 YES

  3. #13
    Joe (Moderator) joecar's Avatar
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    recrit, Thanks, appreciated


    The Save/Reopen values you see are due to the fixed point binary representation not being able to represent all fractions (so 0.0.125 is the closest value that 0.01 can be represented as).

    The 0.001 -> 0 that you see is not a zero, you need to increase the display precision and you will see that is is something like 0.000125.

  4. #14
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    joecar, that makes sense now for the "Save/Reopen values".
    I set all shifts to 0.2s now and everything is working as expected now. Thanks again!

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