AFR's
#3
There are a lot of variables that also need to be considered. What type of gas, how much boost etc...
Things like this help to determine. But yes 12-12.5 would be ideal as long as you can keep temps down. On pump 91 I would say this won't happen. More fuel will be required to cool the burn, or a lower ignition advance.
Mitch Mckee
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