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· Premium Member
151 Posts
On a boosted street engine on E85, there should be no reason why you shouldn't be able to run 11-11.5:1. The engine will be more efficient when not in boost (which will be the majority of drive time on a street car). When you are in boost, it will be for short amounts of time (on the street) and at 7-10 lbs, it will live a long, healthy life.
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