E85 mix?

[DaytonaGTP500]

ok so ive herd alot about people mixing 91 octane and E85 for a moderate race fuel. I guess im just curious if anyone on here does/has done this before and if so what kind of a ratio is used for this and if its honestly even safe or not for me to run ONLY at the track, any and all replies are appreciated

[JoRoW99]

Well the AFR of the fuel is gonna change whenever you add ethanol to it, so youll probably need a tune everytime you do it.

[Fivefingerdeathpunch]

just buy race gas if you really want to when you track it.

[Tuner-Extraordinaire]

ok so ive herd alot about people mixing 91 octane and E85 for a moderate race fuel. I guess im just curious if anyone on here does/has done this before and if so what kind of a ratio is used for this and if its honestly even safe or not for me to run ONLY at the track, any and all replies are appreciated

Yes but you must be wideband tuned for it.