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I've got a good Air Fuel monitor, we learned a long while back that it's about the only way to tune with E85, plug reading is about the same as plug reading a methanol engine! Takes too long to get...

Should be able to work off that 72% figure for the fuel side of the nitrous, huh?? Suggests that the fuel jet would be 1.25 to 1.5 times larger for E85 vs. gasoline??? I've got an MSD timing retard...

Ok, maybe I didn't state things right,,,, my concern is the fuel jet for the nitrous kit, not the carb jets. Just wondering if I should use a fatter fuel jet on the nitrous system because of E-85...

I probably called the people too late yesterday, the guy I talked to was obviously just a phone bank guy--wasn't real sure he even knew what E85 is!!!:LOL::LOL::LOL: Have to try again next week...

I might add some nitrous to the trusty old 501 this winter.... I run in on E85 which of course requires bigger jets (bigger carb in general) then race gas...but it's about 1/3 the price of race gas...