Single Turbo 18 Psi HPPF limit

aflatau · 10-14-2013, 07:58 PM

So it seems that I have discovered the limits of a single turbo setup with an e50 mix. This is at 18 PSI as you can see the HPFP takes a crap up top. Next step is to lower the e85 mix and see if that helps out at all. Any other suggestions are welcome. But be advised I am trying to avoid running meth at this point.

3000GT MR · 10-14-2013, 08:15 PM

I thought Shiv got 600+hp on that chicks car on e85. Which i imagine is around 22-23psi. Sounds like you need to up your fuel scaler and adjust OL fueling

aflatau · 10-14-2013, 08:24 PM

Quote:

Originally Posted by 3000GT MR

I thought Shiv got 600+hp on that chicks car on e85. Which i imagine is around 22-23psi. Sounds like you need to up your fuel scaler and adjust OL fueling

Right now my fuel scalar is 1.15 on both banks.

3000GT MR · 10-14-2013, 08:42 PM

Quote:

Originally Posted by aflatau

Quote:

Originally Posted by 3000GT MR

I thought Shiv got 600+hp on that chicks car on e85. Which i imagine is around 22-23psi. Sounds like you need to up your fuel scaler and adjust OL fueling

Right now my fuel scalar is 1.15 on both banks.

I have mine at 1.20 and never run ethanol

aflatau · 10-14-2013, 08:50 PM

Quote:

Originally Posted by 3000GT MR

I have mine at 1.20 and never run ethanol

How much boost are you running?

Lifted07Duramax · 10-14-2013, 08:55 PM

curious to the fix or whatever the issue is

Jeff@TopGearSolutions · 10-14-2013, 08:56 PM

Quote:

Originally Posted by aflatau

Right now my fuel scalar is 1.15 on both banks.

Quote:

Originally Posted by 3000GT MR

I have mine at 1.20 and never run ethanol

I was going to say I think he could go further. Is there a limitation on how much to add?

Allen@MOTIV · 10-14-2013, 09:00 PM

Fuel trims are maxed out but I don't think a simple fuel scalar adjustment will resolve the issue because the HPPFP is tanking. On pump gas STs typically hit a wall at around the 570whp mark(give or take) and running e50 is only going to exacerbate the issue. I agree whole heartedly that methanol isn't a solution for fuel system limitations.

At this point your only real option is the Vargas HPFP upgrade and that has proven itself to work on other single turbo cars.

3000GT MR · 10-14-2013, 09:04 PM

Quote:

Originally Posted by Jeff@TopGearSolutions

Quote:

Originally Posted by aflatau

Right now my fuel scalar is 1.15 on both banks.

Quote:

Originally Posted by 3000GT MR

I have mine at 1.20 and never run ethanol

I was going to say I think he could go further. Is there a limitation on how much to add?

I run 25ish psi. Look at the cobb e-reference it has the scaler per content. I believe the max is 1.4 or 1.45. Is there a OL fueling option on the JB like the procede has? I know thats the biggest difference. Try porting your fuel rail too. Im pretty sure at 740whp (Captoninsano) your using more fuel than 18psi with e50. So it's definitely not the pump that's your limit. Its what the dme is seeing that's limiting you. I know my trims are usually no more than 10%

3000GT MR · 10-14-2013, 09:08 PM

I understand the whole methonal debate but it has been proven over 650hp with no meth.

aflatau · 10-14-2013, 09:08 PM

Quote:

Originally Posted by 3000GT MR

I run 25ish psi. Look at the cobb e-reference it has the scaler per content. I believe the max is 1.4 or 1.45. Is there a OL fueling option on the JB like the procede has? I know thats the biggest difference. Try porting your fuel rail too. Im pretty sure at 740whp (Captoninsano) your using more fuel than 18psi with e50. So it's definitely not the pump that's your limit. Its what the dme is seeing that's limiting you. I know my trims are usually no more than 10%

Ok I will adjust the fuel scalar and lower the e85 mix to see what happens. Will bump it up to 1.20. Maybe lean out my AFR's up top as well.

AK 335i · 10-14-2013, 09:24 PM

Quote:

Originally Posted by Allen@PTF

Fuel trims are maxed out but I don't think a simple fuel scalar adjustment will resolve the issue because the HPPFP is tanking. On pump gas STs typically hit a wall at around the 570whp mark(give or take) and running e50 is only going to exacerbate the issue. I agree whole heartedly that methanol isn't a solution for fuel system limitations.

At this point your only real option is the Vargas HPFP upgrade and that has proven itself to work on other single turbo cars.

+1

i can use E50 even at 640+ whp...

You are right, the vargas HPFP/rail upgrade is the only viable option as of now to approach 650ish with NO METH

10-14-2013, 07:58 PM	#1
aflatau First Lieutenant 75 Rep 340 Posts Drives: XM Join Date: Mar 2012 Location: Buffalo, NY iTrader: (1)	Single Turbo 18 Psi HPPF limit So it seems that I have discovered the limits of a single turbo setup with an e50 mix. This is at 18 PSI as you can see the HPFP takes a crap up top. Next step is to lower the e85 mix and see if that helps out at all. Any other suggestions are welcome. But be advised I am trying to avoid running meth at this point. __________________ 24 XM(Current) 22 X540i(Sold) 21 M5 Comp(Sold) 07 Single Turbo 335i(one of the first, sold)
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10-14-2013, 08:15 PM	#2
3000GT MR Major 269 Rep 1,392 Posts Drives: 09 335i/3000gt vr4 Join Date: Jun 2012 Location: Sav GA iTrader: (6)	I thought Shiv got 600+hp on that chicks car on e85. Which i imagine is around 22-23psi. Sounds like you need to up your fuel scaler and adjust OL fueling __________________ Have a single turbo and/or tired of burning up O2 sensors? Ask me about the new ADV O2 sensor retro kits! 335i 2010 e92 M-sport Mods: VM Top mount 6466, Aquamist HSF4 w/custom direct port. VRSF IC + Exhaust 335i 2009 e90 665RWHP VFF900 ST RIP .
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10-14-2013, 08:55 PM	#6
Lifted07Duramax Major 163 Rep 1,449 Posts Drives: 2008 BMW red 335i coupe Join Date: Jan 2013 Location: springfield, mo iTrader: (1)	curious to the fix or whatever the issue is __________________ JB4 G5, VRSF catless DPs, FMIC, BMS DCI, Muffler Delete, Alpina B3 Flash, RB Turbos, BB Race Flash
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10-14-2013, 09:00 PM	#8
Allen@MOTIV 38 Rep 634 Posts Drives: 135i Join Date: Jun 2013 Location: VA iTrader: (0)	Fuel trims are maxed out but I don't think a simple fuel scalar adjustment will resolve the issue because the HPPFP is tanking. On pump gas STs typically hit a wall at around the 570whp mark(give or take) and running e50 is only going to exacerbate the issue. I agree whole heartedly that methanol isn't a solution for fuel system limitations. At this point your only real option is the Vargas HPFP upgrade and that has proven itself to work on other single turbo cars.
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10-14-2013, 09:08 PM	#10
3000GT MR Major 269 Rep 1,392 Posts Drives: 09 335i/3000gt vr4 Join Date: Jun 2012 Location: Sav GA iTrader: (6)	I understand the whole methonal debate but it has been proven over 650hp with no meth. __________________ Have a single turbo and/or tired of burning up O2 sensors? Ask me about the new ADV O2 sensor retro kits! 335i 2010 e92 M-sport Mods: VM Top mount 6466, Aquamist HSF4 w/custom direct port. VRSF IC + Exhaust 335i 2009 e90 665RWHP VFF900 ST RIP .
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