Quote:
Originally Posted by redondoaveb
It must be on pump. I know at least with mine (I have 91 octane) it had to be timed for pump or it would get bad knock if timing was set for e85. That's why I did the wastegate set up.
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I have a flex fuel tune. I’m pretty sure timing and fuel are set for pump and e85, and then interpolated for whatever mix you end up using. Obviously fuel has to work this way, and I assume timing works the same way. Tune for best and worst fuel case and interpolate the points for the mixtures of each fuel type.