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Thread: 2012 Challenger SRT thumpr cam

  1. #1
    Tuner in Training
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    2012 Challenger SRT thumpr cam

    6.4 hemi with the small thumper cam. Has the nag1. I'm open to any idle tuning ideas. I have it decent,but getting random throttle limp mode. Mostly did the proportional tables. Also increased throttle minimum,which is probably causing limp modes ? But it really helped the idle

  2. #2
    Advanced Tuner rays04gtx's Avatar
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    Engine>Torque Model>Loss
    [ECM] 12882 - Friction Torque: This is the model of friction torque losses within the engine
    Engine>Spark>advance>Spark Minimum Torque Reduction.
    [ECM] 44681 - Spark Minimum Torque Reduction: Minimum Spark limit when torque reduction is active

    Table 12882 is your better option,
    Might also want to add some "air" to Table 35035 ,Lower voltage area , if your Logging TPS(throttle Voltage) take note to what your Idle voltage is, and add some air at that voltage area, not much.
    Engine>Airflow>Electronic Throttle
    [ECM] 35035 - ETC Throttle Body Airflow: The airflow through the throttle body as measured on a test stand.
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  3. #3
    Tuner in Training
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    I did try the minimum spark torque reduction table,it helped,but was getting a throttle code. I will start over and try the 1288,and 35035. I believe the proportional tables are making the the throttle to unsteady. I didn't log throttle position,but will at least watch it ,to get an idea of the sweet spot.