Originally Posted by
Fast355
Main Spark is Spark Advance vs Load vs RPM High Octane
Idle Spark is Base Spark vs Load vs RPM Drive & P/N.
I just noticed I transposed something when I copied it over. For the IDLE RPM, the values for Drive and Park Neutral are swapped. You want a slightly lower idle in gear than in drive that way when the transmission engages the engine idles slightly lower.
I would also zero out the values in the AFR Spark Advance Correction vs AFR vs RPM table, the Idle Flare Startup Spark Advance vs RPM table, the Cat Lightoff Spark Correction vs ERT vs Load table, and finally the EGR Spark Advance Correction vs Load vs RPM table.
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