runner69
Well-Known Member
you are assuming that the stock fuel injectors can supply enough fuel. 2nd its not spark knock that is dangerous to turbo engines its detonation that causes the damage which has nothing to do with spark timing. the stock fuel system will keep the 14.7:1 to get more power out of E85 it would have to be close to 7:1 and without changing the HP pump and Injectors it will run lean and burn a piston. Ask anyone that has a car or truck that can run E85 how it runs on it, not any better. So without major modifications to the fuel system it will run better in regular gasYou answered your own question. The pcm will add timing til knock is detected. once knock is detected it starts pulling timing. With the higher octane of the ethanol. And the chemical cooling of the ethanol. The knock threshold will be higher to begin with.
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