MPX/E85 Dyno Results.

[92bird]

E85 = "magic fuel"

Huge results on under-intercooled and non-intercooled cars with inefficient superchargers.

E85 has proved its usefulness to me last year on my GTP. My experience from tuning E85 is the acceptable AFR range is much wider. It runs very well rich or lean, with very little hp loss on the rich end vs gasoline.

On 91 octane (the best we get in Denver) my GTP could run about 7 psi boost and 16-17 degrees max wot timing before getting knock retard due to knock sensor activity.

On E85, I ran 11 psi boost, and 21 degrees timing with no knock sensor activity consistently.

Both scenarios non-intercooled. Results on this platform are nearly identical to intercooler upgraded GTP's.

Since the SC is under-intercooled from the factory, I would expect similar results, as you have proven here.

I also found a station that sells E100 here in Colorado. Hmmm...

Jeramie

[90coug]

Originally Posted by 92bird

I also found a station that sells E100 here in Colorado. Hmmm...

Jeramie

Do tell!

[92bird]

Bandimere sells it, and there is a place in loveland that sells it, but only during late spring-early fall timeframe.

E-85 is approx 105 octane
E-100 is approx 113 octane

I question weather or not the stock SC fuel lines will support E-100. Even with a big pump and injectors, but it is out there. I'd be watching the injector duty cycle like a hawk.

Jeramie

[90coug]

Originally Posted by 92bird

Bandimere sells it, and there is a place in loveland that sells it, but only during late spring-early fall timeframe.

E-85 is approx 105 octane
E-100 is approx 113 octane

I question weather or not the stock SC fuel lines will support E-100. Even with a big pump and injectors, but it is out there. I'd be watching the injector duty cycle like a hawk.

Jeramie

Right on, good to know.

Why wouldn't the stock lines hold up? Is the E-100 too thick?

lol, no more money put into the SC! I wonder if I can manage that this year.


Dooooode! You just hit the 1000 post mark... Congrats

[92bird]

Ethanol requires a higher volume of flow. Even with a big pump, and big injectors the lines may become a restriction due to their size. Not for sure, just speculating.

It really just depends on the power level and how you are getting to that power level.

300rwhp on a stock SC block/cam requires more fuel than 300rwhp with a ported cam and heads. Regardless of the type of fuel.

[Super Duper Cou]

I'm running 80lb injectors and a 255lph fuel pump with the stock fuel lines. My buddy who tuned my car didn't say anything about the fuel lines so I don't think they are a restriction at the level my car is at right now on E85. I don't know about E100 but somebody should try it out! : D

[92bird]

I'm running 80lb injectors and a 255lph fuel pump with the stock fuel lines. My buddy who tuned my car didn't say anything about the fuel lines so I don't think they are a restriction at the level my car is at right now on E85. I don't know about E100 but somebody should try it out! : D

Correct, I agree.. My questionability was on E100, since it would require even more volume than E85.

I plan to try the same thing this year with my stockish '94 SC, if the group buy ever goes through on those 80lb injectors, lol I think I will go with the Aeromotive 310lph pump and maybe raise base fuel pressure a bit. I've read that it helps with ignightability of Ethanol.

Congrats on the dyno numbers. That is some crazy torque! I love seeing stuff like this where people try new things.

Jeramie

[BLOWN38]

Originally Posted by 92bird

Correct, I agree.. My questionability was on E100, since it would require even more volume than E85.

I plan to try the same thing this year with my stockish '94 SC, if the group buy ever goes through on those 80lb injectors, lol I think I will go with the Aeromotive 310lph pump and maybe raise base fuel pressure a bit. I've read that it helps with ignightability of Ethanol.

Congrats on the dyno numbers. That is some crazy torque! I love seeing stuff like this where people try new things.

Jeramie

When I put my bigger injectors on the race car I will put the old 80s on my stock 94 5 speed with the stealth pump and tune it on e85 too.

[Super Duper Cou]

Originally Posted by 92bird

Correct, I agree.. My questionability was on E100, since it would require even more volume than E85.

I plan to try the same thing this year with my stockish '94 SC, if the group buy ever goes through on those 80lb injectors, lol I think I will go with the Aeromotive 310lph pump and maybe raise base fuel pressure a bit. I've read that it helps with ignightability of Ethanol.

Congrats on the dyno numbers. That is some crazy torque! I love seeing stuff like this where people try new things.

Jeramie

Thanks man, I'm definitely happy I made the switch to E85! Looking forward to seeing how ethanol works for your car.

[Super Duper Cou]

Originally Posted by BLOWN38

When I put my bigger injectors on the race car I will put the old 80s on my stock 94 5 speed with the stealth pump and tune it on e85 too.

Sweet dude, make sure to post your numbers for your 94 when you get around to making the switch. Hopefully you'll like making the switch to E85 as much as I did.

[Tedor]

What more mods do you have except the MPx, injectors and fuel pump?

[nickleman60]

Originally Posted by Tedor

What more mods do you have except the MPx, injectors and fuel pump?

He's running E85 fuel.....it makes a huge difference.

[Super Duper Cou]

Originally Posted by Tedor

What more mods do you have except the MPx, injectors and fuel pump?

Mods:
9" K&N cone air filter
76mm MAF
3 1/2" intake pipe
85mm throttlebody
custom built raised sc top
custom front mount intercooler
kooks mid length headers
2 1/2" test pipes (no cats)
2 1/2" true dual exhaust with no resonator
magnaflow mufflers
tuned with an sct chip
ac delete
10% od supercharger pulley
10% od jackshaft pulley
10% od crankshaft pulley
gates supercharger belt
magnum powers tensioner springs

[Tedor]

Sweet, what duty cycle did you get with the 80lb injectors and 255lph pump? Maybe planning on running mine on E85 too

[qc89SC]

Originally Posted by Super Duper Cou

Mods:
9" K&N cone air filter
76mm MAF
3 1/2" intake pipe
85mm throttlebody
custom built raised sc top
custom front mount intercooler
kooks mid length headers
2 1/2" test pipes (no cats)
2 1/2" true dual exhaust with no resonator
magnaflow mufflers
tuned with an sct chip
ac delete
10% od supercharger pulley
10% od jackshaft pulley
10% od crankshaft pulley
gates supercharger belt
magnum powers tensioner springs

you are on the stock injector? wish ill get similar numbers with my mpx clone!!! will have almost the same mods that you have on a freshly rebuilt engine