Quote:
Originally Posted by shiv@vishnu
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.
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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?