Quote:
Originally Posted by ZzzZz
Now the unknown is: what octane is necessary for the ECU to advance timing to the MAX?
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Given proper conditions absent the externalities that would otherwise cause the ECU to pull timing (excessive heat and/or very high load), that figure can even be lower than 91-octane. However, in real-world conditions, my guess is that it's right around there where timing will not be advanced further.