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.