Had the Charger on E-85 with the Quick Fuel carb and liked it, but found out the E-85 did not like my mallory 500 filter. Switched to EFI, 100 octane gasoline with a real safe tune, a bit fat, and only 32-degrees ignition timing. I was going to chassis tune the EFI with the gasoline, but am going back to E-85 with the EFI and stainless steel filter material.