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Old 04-13-2014, 04:44 PM   #1657
gonzo
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Quote:
Originally Posted by shiv@vishnu View Post
E% variability doesn't really have much to do with my last post. You can tune well beyond MBT (in NA application) with far less than e85. I suspect e40 would give enough octane to allow you to run a too aggressive (power robbing) tune without even knowing it from logged knock retard. This is why dyno tuning is key for custom e85 tuning for more power.
does this mean we could run your e85 tune down to e40? I know you've said its safe down to e60.

would mixing 91 into the e85 tank bring my fuel trims into negative and help my mpg without affecting power?
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