Quote:
Originally Posted by nmlittlebigman
Flash the 91 or 91 ACN map (with 93 in the tank) and see if it still persists. They have more conservative timing. What do your fuel trims look like? (AF Learning #1 A,B,C,D). You can pull those up at idle. Do that before you flash, because they will be reset.
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I already am using the stage 1 91 oct map on 93 octane gas. The tune has been relatively fine up until today, and never had reproducible -1.4 knock upon letting off the gas pedal. Not really sure what would cause this type of change. Would a fueling issue have anything to do with causing knock on letting off the gas? I'll take a look at fuel trims and see if anything stands out.