[NG329]

Originally Posted by KingLT1

.78 is too rich imo. Pump gas should be richer than Ethanol. I target .81-.82 on pump and .83-.84 on E with LT4 stuff. If the pump gas tune is dialed then you don't need to change much for E far as AFR. The ECU will adjust if the tune is setup correctly.

I overgeneralized and mentioned a range because it really depends on the E content.