[Joshinator99]

Originally Posted by KingLT1

E85 require 30% more volume but You don't have to run full E to gain the benefits from it. E40 is 100-101 octane, E50 is 103-104-octane, E60 is 105-106 octane, E85 is 109-110 octane. All you need to do is mix it 50/50 E/pump 93 to get around 50% E. Not that hard and you just greatly reduced fuel system demand and still have high octane fuel. Having a flex fuel sensor makes it so ****ing easy a caveman can do it. Most complaints you hear about mixing E comes from those that are hard tuned for E with no sensor and they need to hit E80 or whatever they are tuned on in order for the fueling to remain on point.

I did a back to back comparison between my 3.5 and 3.25 pulley.

With my 3.25 pulley I am seeing 11psi peak when it's 50 degrees outside. With E40 fuel and 18 degrees timing the car traps about 1-1.5 mph higher in the 1/8th vs the 3.5 pulley(9psi peak), E65 fuel, and 20 degrees timing.

Mixing to E50 here and it was worth 90 HP over 93 octane at the same boost level on my build. If I had more E with me at the dyno I would have tried E65-70 or more. But to Kings point, you don’t need full E to see some fantastic benefits. And mixing to ~E50 is so easy.