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Thread: 2015 GMC Sierra / cammed

  1. #1
    Tuner in Training
    Join Date
    Jun 2018
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    42

    2015 GMC Sierra / cammed

    I am working a file and have a question. When the engine is ECT is cold and I put truck in reverse, it cuts off. Once warm I don't have that issue.
    Non VVT cam installed with stall to match the cam.
    Tune is attached.
    Attached Files Attached Files

  2. #2
    Tuner in Training
    Join Date
    Jun 2018
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    Arizona
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    39
    Quote Originally Posted by [email protected] View Post
    I am working a file and have a question. When the engine is ECT is cold and I put truck in reverse, it cuts off. Once warm I don't have that issue.
    Non VVT cam installed with stall to match the cam.
    Tune is attached.
    i see a few tables that still have stock values.
    --idle external load table. engine-idle-torque-external load
    when the ecu doesnt see throttle input it refers to this table to model the idle torque and external loads to the engine. the values are units of desired torque. do not mess with any negative numbers in this table. try adding 50 rpm to any value from 450-1100 in all temp ranges.
    --limit offset. engine-idle-torque-limit off set
    try raising this value to 100 ft lbs. dont go to high or your idle will oscillate.