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Thread: E38: PE/COT Spark Advance Correction Mult. vs. MAP?

  1. #1
    Tuner
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    E38: PE/COT Spark Advance Correction Mult. vs. MAP?

    Spark -> Advance -> Spark Correction AFR Correction-> Mult vs. MAP

    How does this factor into timing? I was under the impression that for a given MAP value, the numeric entered would be multiplied against the spark advance. So, if the calculated timing was 20, the MAP was 10.2 w/ a value of .9, the "final" number is 20 * 90% = 18.

    Yet, when I look at say the stock ZL1 tune, the curve is backwards from the way that I've done it.

  2. #2
    The table you refer to is a multiplier of "Spark -> Advance -> Spark Correction AFR Correction-> Gas" which is then added to calculated timing.