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Thread: Timing going negative at WOT

  1. #1
    Potential Tuner
    Join Date
    Jun 2025
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    2

    Timing going negative at WOT

    Looking for help with my 6.0 4l80e setup includes a BTR red hot cam with a circle d 3200rpm stall. My truck has been tuned already and been driving great until all of a sudden it started pulling all timing at WOT. The knock sensors are disabled due to the headers hitting the frame when it was getting tuned. The clearance issue has been fixed already but knock sensors are still disabled. My tuner is difficult to get a response from so looking for help elsewhere..25-06-30 10-32-04.hpl

  2. #2
    Potential Tuner
    Join Date
    Jun 2025
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    2
    Uploaded file including spark retard and advance channels.
    Attached Files Attached Files

  3. #3
    Senior Tuner
    Join Date
    Dec 2019
    Location
    MS
    Posts
    1,187
    This is useless without the tune.
    But base timing is showing to go into single digits and the IAT & Coolant temp modifiers are removing 2*+

  4. #4
    Senior Tuner
    Join Date
    Nov 2006
    Location
    North Carolina
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    4,811
    Yeah base advance is 1.5 degrees and IAT retard is about the same = 0
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  5. #5
    Senior Tuner
    Join Date
    Nov 2006
    Location
    North Carolina
    Posts
    4,811
    Just saw that it is basically 100% into low octane mode too.

    GEN3's work different from gen 4 +

    Knock learn factor 1 = high octane 0 equals low.
    [email protected] - [email protected]
    Email tuning!!!, Mail order, Dyno tuning, Performance Parts, Electric Fan Kits, 4l80e swap harnesses, 6l80 -> 4l80e conversion harnesses, Installs