EE does have low octane compensation tables and logic as well. it's probably the same code.
the logic is likely the same as most low octane compensation systems, if there are a lot of knock events within a certain timeframe, then it adds in more low octane compensation. the attack/decay is tunable.I have yet to determine just how the code detects low octane.
that isn't really going to help this guys ethanol situation since spark is the not the biggest concern. if you don't have consistent ethanol levels, the difference between 50% and 85% ethanol is massive with regards to AFR.
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