Quote:
Originally Posted by 607Motorsports
AFR is entirely dependent upon each individual car... I know on my Cavy it can run a 12.0 on pump all day and never have any issues whatsover. If I attemtped to run a 12.0 afr on my Cobalt it would likely break the ring lands after only a couple passes. The Cobalt needs to run a bit rich in order to compensate for the unequal fuel distribution the rail provides to the #4 cylinder. Right now i'm at 11.3afr on pump and will leave it there for safety seeing the car is my DD.
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There are people who run obscene amounts of boost/timing w/o problems either. I am not saying you cannot. IMHO, the gains from running that lean are not worth the risk of the potential knock, increased EGT, etc..
To say it's "useless" when giving the fact that MANY tuners do not go past MID 11 (even regardless of octane) and factory cars come rich is not being realistic.