[JSH]

My car will soon be capable of making 800-825 wheel (on Denver dyno) on 100 oct. and perhaps more on E85.

My question is, how much uncorrected hp will both the stock high side and injectors support?

If not OEM, which pump and injector?

It has a DSX low side now.

[JasonGofast]

Of course a lot of factors go into it, but after spending time researching builds I'd say with a cam, low side, e85 and plenty of meth probably would top out around 870-900 on the stock blower.

[JSH]

Originally Posted by JasonGofast

Of course a lot of factors go into it, but after spending time researching builds I'd say with a cam, low side, e85 and plenty of meth probably would top out around 870-900 on the stock blower.

870-900 wheel, measured/uncorrected, right?

But let's just make 825 uncorrected wheel right now with Kong Stage X and E85. (?)

Remember, I've got 40-60F air for the next 7 months.

[Camaro1973]

Originally Posted by JSH

My car will soon be capable of making 800-825 wheel (on Denver dyno) on E85.

My question is, how much uncorrected hp will both the stock high side and injectors support?

If not OEM, which pump and injector?

It has a DSX low side now.

You will not be able to run E85 period on your build. Probably E20-E30 max and that's pushing it. Your low side is fine, but your high side is going to lose pressure and send your INJ PW into the 6's.

[JSH]

And it's the high side I'm trying to figure out. KaTech has told me numerous times that they regularly do 830 rwhp corrected on their Michigan dyno on OEM high side and injectors. I guess I need to see what it makes on Kong Stage X, 100 octane, before I address any Exx. I'm thinking it will make ~815 corrected.

Also, which high side would I buy?

Originally Posted by Camaro1973

You will not be able to run E85 period on your build. Probably E20-E30 max and that's pushing it. Your low side is fine, but your high side is going to lose pressure and send your INJ PW into the 6's.

[Joshinator99]

Originally Posted by Camaro1973

You will not be able to run E85 period on your build. Probably E20-E30 max and that's pushing it. Your low side is fine, but your high side is going to lose pressure and send your INJ PW into the 6's.

Agreed!

Originally Posted by JSH

And it's the high side I'm trying to figure out. KaTech has told me numerous times that they regularly do 830 rwhp corrected on their Michigan dyno on OEM high side and injectors. I guess I need to see what it makes on Kong Stage X, 100 octane, before I address any Exx. I'm thinking it will make ~815 corrected.

Also, which high side would I buy?

830 WHP corrected to STD is about 790-800 SAE which sounds about right for LT4 fueling. If you run 95 octane zero ethanol (or higher octane) you can stretch it further since it’s the E content that limits you on those injectors. I believe Vengeance did a bit over 900 STD with 95 octane zero ethanol by pushing the limit in terms of timing and fueling, but I seriously doubt they would have been willing to send that tune out the door to a customer.

I did the LPE high side (BB HPFP and LT4+52% injectors) with good results (906 SAE/942 STD) with plenty of wiggle room. The XDI stuff can stretch you a bit further since they add a second LT4 HPFP but I didn’t want to do that since my setup is simpler & cleaner. Port makes a bit less power than DI but the head room on a port system is pretty huge and likely a good amount less money (especially the toohighpsi setup). I wasn’t comfortable relying on meth at all, but to each their own.

[JSH]

I'm running 100 octane no eth (from Bandimere Raceway), so maybe the Kong X is going to come close to maxing out my OEM pump and inj. and pretty much put me where I need to be for now, 790-800 SAE.

Originally Posted by Joshinator99

Agreed!
830 WHP corrected to STD is about 790-800 SAE which sounds about right for LT4 fueling. If you run 95 octane zero ethanol (or higher octane) you can stretch it further since it’s the E content that limits you on those injectors. I believe Vengeance did a bit over 900 STD with 95 octane zero ethanol by pushing the limit in terms of timing and fueling, but I seriously doubt they would have been willing to send that tune out the door to a customer.

I did the LPE high side (BB HPFP and LT4+52% injectors) with good results (906 SAE/942 STD) with plenty of wiggle room. The XDI stuff can stretch you a bit further since they add a second LT4 HPFP but I didn’t want to do that since my setup is simpler & cleaner. Port makes a bit less power than DI but the head room on a port system is pretty huge and likely a good amount less money (especially the toohighpsi setup). I wasn’t comfortable relying on meth at all, but to each their own.

[Z OH 6]

Originally Posted by Joshinator99

Agreed!



830 WHP corrected to STD is about 790-800 SAE which sounds about right for LT4 fueling. If you run 95 octane zero ethanol (or higher octane) you can stretch it further since it’s the E content that limits you on those injectors. I believe Vengeance did a bit over 900 STD with 95 octane zero ethanol by pushing the limit in terms of timing and fueling, but I seriously doubt they would have been willing to send that tune out the door to a customer.

I did the LPE high side (BB HPFP and LT4+52% injectors) with good results (906 SAE/942 STD) with plenty of wiggle room. The XDI stuff can stretch you a bit further since they add a second LT4 HPFP but I didn’t want to do that since my setup is simpler & cleaner. Port makes a bit less power than DI but the head room on a port system is pretty huge and likely a good amount less money (especially the toohighpsi setup). I wasn’t comfortable relying on meth at all, but to each their own.

Sounds about right, Vengeance has told me they can do around 875 STD whp on 93 octane, that's the limit.

[Joshinator99]

Originally Posted by JSH

I'm running 100 octane no eth (from Bandimere Raceway), so maybe the Kong X is going to come close to maxing out my OEM pump and inj. and pretty much put me where I need to be for now, 790-800 SAE.

So you’re running 100 octane all the time? Or are you going to swap pullies to run 93 on the street?

[Camaro1973]

Originally Posted by JSH

I'm running 100 octane no eth (from Bandimere Raceway), so maybe the Kong X is going to come close to maxing out my OEM pump and inj. and pretty much put me where I need to be for now, 790-800 SAE.

If you have a 93 and a 100 octane tune already then there’s no point in fiddling with ethanol unless you plan on more fuel upgrades. With the X port your going to be running more boost which is why on every max effort build I see with this X port meth is involved, and if on ethanol then high side/injectors were upgraded.

The added boost also comes heat, another reason most run meth. With all this money spent on your blower mods, you could if sold the stock blower and bought a 2650 and called it a day. Swapping Pullies takes literally 10 mins as well.

[Camaro1973]

Originally Posted by Joshinator99

So you’re running 100 octane all the time? Or are you going to swap pullies to run 93 on the street?

He’s better off staying at same boost level on 100 and upping timing 3-4 degrees. (Or whatever tuner can achieve) that blower is going to be pumping some serious heat with the added boost. Unless he boosts down which defeats entire purpose.

[Joshinator99]

Originally Posted by Camaro1973

He’s better off staying at same boost level on 100 and upping timing 3-4 degrees. (Or whatever tuner can achieve) that blower is going to be pumping some serious heat with the added boost. Unless he boosts down which defeats entire purpose.

That works as well. He’s either swapping pulleys or changing tunes to go along with the different fuel. Both work but such a pain compared to having an upgraded fuel system and being able to run E, letting the car scale the timing automatically. Just my 2 cents.

[Camaro1973]

Originally Posted by Joshinator99

That works as well. He’s either swapping pulleys or changing tunes to go along with the different fuel. Both work but such a pain compared to having an upgraded fuel system and being able to run E, letting the car scale the timing automatically. Just my 2 cents.

Yeah it sucks. I would upgrade mine in a heartbeat but there's literally almost no ethanol stations here. I would have to buy drums of it. Its funny, i can get GT 260 right out of the pump down the street at sunoco though ..... go figure.


Hes probably good to have both 93/100 tunes and load the 100 tune when needed i suppose. Or spend the money on fuel system and toss the stock blower in a grinder

[KingLT1]

If you do FIC +30 and LPE DI pump you can run pump E78 to 800. Ryne Cunningham did it.

My brothers running +30 injectors, LPE di pump, DSX low side, and has enough fuel for E60 on a 11:1 LT4 H/C 2650 spinning16psi in his Z06. Should be over 900whp and the log data supports it.

Hell with changing tunes. Spend the money upgrade the fuel system, install a flex sensor and enjoy running some 2.00 a gallon Ethanol or a blend of. Even E60 is still 105-106 octane.