[Rapid_blue_zl1_22]

I have a 2022 with headers, no cats, Corsa intake, 95mm LT5 TB, Kong X-port blower, and a FlexFuel sensor. I am still on stock pulley sizes. Can I run Full E85 in my car, or at least close to it? If not, will a low side give me the extra fuel needed to do so? I plan to have the car tuned on the conservative side since I do road course track the car. I don't mind being a little down on power if it means more E content.

The reason I want more E content is, so the car won't pull timing on track. I currently run a 100 octane blend with 93 (about 50/50) to combat this, and that gets expensive.

[Megahurtz]

Even with a low side you can't run full E on that setup. Your high side and injectors won't keep up with the demand.

[Joshinator99]

Originally Posted by Megahurtz

Even with a low side you can't run full E on that setup. Your high side and injectors won't keep up with the demand.

Agreed!

@Rapid Blue: you should consider running an E blend…it’ll be miles ahead of 93 and offer more cooling than the race gas mix you’re running now. Even E40 would be fine, and might be able to eek out a bit more. I’d at least do a JMS voltage booster on the low side to make sure that’s solid at WOT.

[Rapid_blue_zl1_22]

Originally Posted by Joshinator99

Agreed!

@Rapid Blue: you should consider running an E blend…it’ll be miles ahead of 93 and offer more cooling than the race gas mix you’re running now. Even E40 would be fine, and might be able to eek out a bit more. I’d at least do a JMS voltage booster on the low side to make sure that’s solid at WOT.

Thanks for the reply. So it would be better to run a voltage booster instead of a low side? I'm fine with running a blend, but I just would prefer to not have to mix. Plus I hate the smell of 93 with no cats.

[KingLT1]

Originally Posted by Rapid_blue_zl1_22

Thanks for the reply. So it would be better to run a voltage booster instead of a low side? I'm fine with running a blend, but I just would prefer to not have to mix. Plus I hate the smell of 93 with no cats.

No not better, but sufficient enough to feed your stock high side. The only way you will be able to run full E is with Port Injection if staying with a stock cam. If you did 38% fuel lobe cam, XDI +30 injectors, LPE HPFP, and Aux low side, then you could run Full E on 10-12psi. Add the cost of this up and a THP port injection setup is 1/3 of the cost and you will have all the fuel you will ever need. Or you can rationalize like the rest of us have and just blend down to E50 range and the DI fuel system goes much further.

[Rapid_blue_zl1_22]

Originally Posted by KingLT1

No not better, but sufficient enough to feed your stock high side. The only way you will be able to run full E is with Port Injection if staying with a stock cam. If you did 38% fuel lobe cam, XDI +30 injectors, LPE HPFP, and Aux low side, then you could run Full E on 10-12psi. Add the cost of this up and a THP port injection setup is 1/3 of the cost and you will have all the fuel you will ever need. Or you can rationalize like the rest of us have and just blend down to E50 range and the DI fuel system goes much further.

Ok, that answers my question. It just isn't worth it to run full E85. I will probably just get a JMS FuelMax and run E30-50.