Quote:
Originally Posted by Cory S
That's nuts..... I just don't see why it would be able to get away with it that lean. Lean is lean. We run our 550hp 10:1 NA engines at 12.7-13.0:1, and our 700-800hp Boosted ones at 11.7-12.0:1...
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Notice that the stock run shows the same lean AFR. They're right, all these new motors run much more lean that what we're used to seeing.