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      11-20-2012, 02:02 AM   #12
Brigadier General

Drives: Three Hundred and Thirty Five
Join Date: Jul 2010
Location: Yonkers NY

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2007 BMW  [3.50]
Originally Posted by Ænema View Post
THE ECU WILL NOT ADVANCE TIMING TO TAKE ADVANTAGE OF HIGHER OCTANE. Timing advance will follow the ignition tables unless it makes corrections or it triggers a setpoint for a correction factor table(namely CATs.) That means that if you're having timing corrections and you mix in 100 octane then it will just clear up the corrections.
So your saying that if i put 87 or 91 in my tank vs 100 ocatane. it would perform equal or worse?

Doesnt Europe take advantage of higher octane premium gas? (99 ron=94-95 octane)

And 91 octane users vs 93 octane users are equal also?

Last edited by idrift4wd; 11-20-2012 at 02:11 AM.