E85 is awesome for making power...............but it takes a LOT of it to make that power. When I was closer to stock I converted my car to E85(105 octane) and ran .3 faster at the dragstrip just by converting/tuning on E85. Once I added pullies and other goodies I quickly ran out of fuel and since I was under warranty still I didn't want to change to huge injectors and/or a bigger fuel pump so I switched back to 100pump tune.





PS I was getting 11mpg city while running E85.