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Thread: AFR Spark Advance not pulling commanded. Also why knock?

  1. #1
    Tuner in Training
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    May 2016
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    Jefferson, LA
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    AFR Spark Advance not pulling commanded. Also why knock?

    2000 camaro ECM. just modified the AFR Spark Advance Correction table and went out for a log. My spark table maxes out @ 1.2 cyl airmass. I've attempted to use AFR Spark Advance to modify spark beyond 1.2g in attempt to set up spark accordingly for 10# & 14# on the boost controller. I made a few pulls on the 10# setting to see if it was working which it was. Made a few pulls on the 14# setting to find that the negative commanded timing is not pulling as I'm intending (-1.1 instead of -4). Also @ 14# I logged a knock event that pulled timing, specifically 14* @ 14#. I'd like to know what you guys think caused the spark retard as well as input as to why AFR Advance is not functioning as intended.

    1.15.21 cruise 3.hpl
    3barOLSD.Channels.xml
    3bar SD.Layout.xml

    Thanks in advance,
    Beau

  2. #2
    Tuner in Training
    Join Date
    May 2016
    Location
    Jefferson, LA
    Posts
    18
    tune might help
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