[Nimair.ZL1]

Originally Posted by BunnyBoy

Whats the power level on that?

I would say close to 750-775ish with the setup mentioned above. I know that close to 850 RWHP the high side starts dropping off.

[KingLT1]

Originally Posted by BunnyBoy

Whats the power level on that?

About 700-720whp.

Just to clarify, 850whp is what the high side falls off on 93 pump gas, Not E85. Full E85 it's falling off in the 700whp range even with a bigger cam lobe. This is why we blend, because we can get 90% of the gains on E50-E60 vs E85 and the fuel system will go much further. On most builds E50-E60 is plenty of octane(103-106).

[BunnyBoy]

Originally Posted by KingLT1

Just to clarify so the person you quoted isn't confused, 850whp is what the high side falls off on 93 pump gas, Not E85. Full E85 it's falling off in the 700whp range even with a bigger cam lobe. This is why we blend, because we can get 90% of the gains on E50-E60 vs E85 and the fuel system will go much further. On most builds E50-E60 is plenty of octane(103-106).

The BMW crowd does the same thing. It's the nature of DI only engines.



About 700-720whp.

If you go E50 and up the boost with upgraded low side how much more does it pump it up then?

[KingLT1]

Originally Posted by BunnyBoy

If you go E50 and up the boost with upgraded low side how much more does it pump it up then?

roughly 80whp...

[JSH]

Originally Posted by CW3SF

Flex fuel is the easiest mod to install that I’ve done on my car.

Damn, you convinced me. I think I'll buy a kit today and put some E in it.

[BunnyBoy]

Originally Posted by KingLT1

roughly 80whp...

Thank you for this info.

[Bird71]

Originally Posted by JSH

Damn, you convinced me. I think I'll buy a kit today and put some E in it.

JSH/King,
So are there any other downsides to using E besides it's fuel consumption and extra $$ to install?

[IMCWORTH]

I have these octane levels available to me would e85 still be necessary for someone who doesn't race

[ZL14ever]

Originally Posted by JSH

Damn, you convinced me. I think I'll buy a kit today and put some E in it.

You'll need port injection to run a meaningful amount of E in your setup, unless you back down on upper pulley size. My C7 has a similar setup with port injection and fuel is tapped out at E50 (mainly due to flow limit of DSX external pump)

[arpad_m]

Originally Posted by IMCWORTH

I have these octane levels available to me would e85 still be necessary for someone who doesn't race

Not necessary per se, but it'd give you higher octane than that 101 even with a blend for 1/3-1/4 the price, and that's just one of the advantages stated here and in many of KingLT1's posts in other threads.

[JSH]

Originally Posted by ZL14ever

You'll need port injection to run a meaningful amount of E in your setup, unless you back down on upper pulley size. My C7 has a similar setup with port injection and fuel is tapped out at E50 (mainly due to flow limit of DSX external pump)

Yeah, I was being sarcastic. I'd need a BBFP, 65+ injectors (or larger), larger fuel lines, the E kit, etc, etc.

It's simpler for me to use MS109 at the track, although 5 gal. is $125

[IMCWORTH]

Originally Posted by arpad_m

Not necessary per se, but it'd give you higher octane than that 101 even with a blend for 1/3-1/4 the price, and that's just one of the advantages stated here and in many of KingLT1's posts in other threads.

My problem is I live in California E85 Is available all over the place but the problem I’m having is I would need a tune and with a tune I can’t smog.

California Dreaming

[NicKey]

Quote:
Originally Posted by Megahurtz View Post
E35 on the stock fuel system with a Kong X port, a 2.3 upper and cold weather is not well below the limit of the stock fuel system. I tune a lot of these cars with Flex Fuel. Unless you live somewhere in a high altitude zone, you're already on the edge with E35 in decent weather. Let it get cold and the demand goes way up and the fuel pressures will fall off a cliff. It's not a gradual drop when you're on the edge, its more like falling off the cliff.

I could be wrong, I wasn't there. But if I had to bet, I would still bet a loss of fuel pressure was the cause. I only offer the advice so that you don't make the same mistake twice.

Originally Posted by Katech_Mike

I agree with this.

Also why I'm not a fan of running blends. They really need to be baby sat and most of my customers do not want the hassle of consistently logging.

We agree as well!