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Thread: Revs hang?

  1. #1
    Tuner in Training
    Join Date
    Aug 2017
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    17

    Revs hang?

    Hey guys, I've noticed on my 17 Silverado 5.3L the revs hang for awhile after a hard rev. I know this has been discussed with the Gen III/ IV stuff but is there a fix for this on the Gen V? Thanks in advance.

  2. #2
    Tuner in Training
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    Jul 2018
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    Interested in hearing if there is too. I believe you can just something in idle controls, but I don't know which parameter.

  3. #3
    Senior Tuner
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    May 2003
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    South FL
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    I experienced this if the Driver Demand tables were highly modified. Could have been a coincidence but that was the only time I ever experienced it early in my Gen V tuning days.
    [email protected]
    Owner/GM Calibrator
    Gen V Specialist - C7 Corvette, Gen6 Camaro & CTS-V3

  4. #4
    Quote Originally Posted by TriPinTaZ View Post
    I experienced this if the Driver Demand tables were highly modified. Could have been a coincidence but that was the only time I ever experienced it early in my Gen V tuning days.
    Same here. I put the driver demand table back to stock and it went away

  5. #5
    Tuner in Training
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    Jul 2018
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    I've also been told that you have to run the stock driver demand tables, but then the revs still hang somewhat when revved in neutral.

  6. #6
    Tuner in Training
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    Jul 2015
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    i ran into this when maxing the axle TM values; also had success massaging the virtual torque and driver demand tables in that region

  7. #7
    Tuner in Training
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    Oct 2016
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    try reducing driver demand in the idle section(top left) just experienced the same issue 3 days ago.

  8. #8
    Tuner in Training
    Join Date
    Jul 2018
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    10
    Still having this issue. I tried adjusting external idle load and it seemed to have mitigated it a little. When you say reducing these driver demanded torque, you mean increasing the absolute values of the negative numbers?

    https://imgur.com/GD11vPV

    That's the stock driver demanded torque. Throttle input versus VSS/RPM. As 0 by 0 it's 56. Beyond that it's -41, -121, -175. So what would you recommend?