04-26-2020, 08:58 AM | #1 |
Drives: 10 SS A6 Huron TT Join Date: Oct 2016
Location: New Baltimore MI
Posts: 90
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Aux fuel pumps - not that good!
So last year with my Hurron Speed twin turbo kit on pump e85 and wastegate spring boost (13 psi) I made 789 rwhp. I was told to up the boost I needed more fuel.
I upgraded my 90 lb injectors to 120lb For my fuel pump(s) in addition to my already Livernois twin pump with DW300 pumps inside and on JMS booster, I added the SMG Aux pump. Pretty much hitting the same boost and a little more power, tuner tells me I am still running out of fuel. At 13.5 PSI made 820. So I have 3 fuel pumps and 120 lb injectors. We can watch the Aux Pump kick on around 5 PSI at about 3600 RPM, but the fuel pressure was dropping up top. My tuner says my FPCM is correctly tuned. Anyone making good power on e85 with an Aux pump? I was hoping for more... |
04-26-2020, 09:52 AM | #2 |
Drives: G8 Join Date: Mar 2012
Location: NJ
Posts: 251
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What size feed and is it still a dead head system?
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04-26-2020, 11:05 AM | #3 | |
Drives: 2011 Camaro SS 6sp Join Date: Nov 2016
Location: Drivers Seat
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Quote:
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2011 Camaro SS---SOLD
TMS Dart 427 FED M311s, ESS Tuning G4 Blower, DSX Triple FP Assembly, DSX FF, FIC1300, Mcleod RXT 1200HD, Edlebrock Pro Flo XT 1158whp 1017wtq. 2010 CTS-V A6 - "Stock" SOLD 630whp 658wtq 2024 F-150 RCSB 5.0 4x4 waiting for tunes... |
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04-26-2020, 07:23 PM | #4 |
This is why I just pulled my ZL1 pump and DSX aux kit off my car.
My new 416 with novi 2200x on E85was going to need more fuel. I went AGP triple system. It’s just fore system with better wiring. I am also adding a 2nd switch to stage the 3 pumps. Also looking into putting the pressure sensor back in the system. |
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04-27-2020, 05:30 AM | #5 |
Drives: 10 SS A6 Huron TT Join Date: Oct 2016
Location: New Baltimore MI
Posts: 90
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04-27-2020, 10:13 AM | #6 | |
Drives: 2011 1SS RS Camaro, 1995 LSX 240SX Join Date: Mar 2011
Location: Austin, TX
Posts: 461
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Quote:
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2011 Camaro 1SS
Whipple Supercharged street monster |
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04-27-2020, 11:02 AM | #7 | |
Drives: 2011 Camaro SS 6sp Join Date: Nov 2016
Location: Drivers Seat
Posts: 1,904
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Quote:
https://agpturbo.com/camaro-5-ss-dual-triple-fuel-pump/
__________________
2011 Camaro SS---SOLD
TMS Dart 427 FED M311s, ESS Tuning G4 Blower, DSX Triple FP Assembly, DSX FF, FIC1300, Mcleod RXT 1200HD, Edlebrock Pro Flo XT 1158whp 1017wtq. 2010 CTS-V A6 - "Stock" SOLD 630whp 658wtq 2024 F-150 RCSB 5.0 4x4 waiting for tunes... |
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04-28-2020, 09:46 PM | #8 |
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Drives: 2012 2SS CAMARO 45th Join Date: Apr 2011
Location: St. Charles, IL
Posts: 18,663
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If you guys are trying to run 850-900rwhp with E85 you need a legit dual or triple in tank set up. We have taking the Squash dual pumps past those numbers but if you're eyeing 1000rwhp on E I'd go with a Fore triple.
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06-02-2020, 12:10 PM | #9 | |
Drives: 10 SS A6 Huron TT Join Date: Oct 2016
Location: New Baltimore MI
Posts: 90
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Quote:
Just curious, what size is the larger aux pump? Mine is a 255 Thanks |
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06-02-2020, 05:40 PM | #10 |
Valkyrie14
Drives: Chevrolet Camaro SS Join Date: Mar 2020
Location: Eau Claire, Wisconsin
Posts: 962
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Okay I know I’m out of my league on this post, but... I’m running somewhere around 550 rwhp (dyno next month). My tuner told me my LS3 fuel pump will feed my 85# injectors fine. If after tune I want more he recommended a aux fuel pump instead of going dual in the tank. Agree or disagree?
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2014 SS LS3/LSA Supercharger, 10% Super Damper, 2.55 upper, AGP Dual Pump, ID 1050 injectors, Pegasus solid rear cradle bushings, LT Headers, Roto-Fab CAI, Elite E2 catch can, E85 corn fed, 160 Thermostat, Monster Twin Disk, MGW Short Throw shifter, Tick Clutch Master Cylinder, HP Tuners, JL Audio system.
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06-02-2020, 06:26 PM | #11 |
Drives: T Join Date: Mar 2015
Location: CA
Posts: 803
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E85 consumption is 30% more, you would be in similar situation as OP. 85/90# injectors and stock LS3 / ZL1 will not fulfill your E85 dreams, and seems OP says aux pumps suck.
If you were to stay on pump gas this would be different and maybe a aux pump would work for you, but E85 needs more. |
06-02-2020, 08:04 PM | #12 | |
Drives: 2011 Camaro 2SS LS3 Whipple Join Date: May 2019
Location: Connecticut
Posts: 1,925
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Quote:
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Whipple 2.9 CAI ID1050x injectors ZL1 Pump JRE FPCM JMS Voltage booster JRE Rough Idle blower cam BTR .660 springs CHE trunnion kit 1 7/8 Speed Engineering Borla Atak JRE scoop 1.5" lowering springs BMR trailing arms and toe links Cradle inserts 704WHP 603WTQ 93 octane
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06-03-2020, 05:28 AM | #13 | |
Drives: 2011 Camaro SS 6sp Join Date: Nov 2016
Location: Drivers Seat
Posts: 1,904
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Quote:
https://www.lingenfelter.com/product...l#.Xtd5lTpKiUk I saw more pressure when it kicked in, but the FP still tapered off some. It's not the stock feed line, because many have used that up to 1100whp and beyond. I'm guessing it must have to do with sharing the feed line with the in tank pumps. Maybe there is some type of internal regulation going on inside the tank and pressure bleeds back into the bucket. I dont know, but I gave up and went triples.
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2011 Camaro SS---SOLD
TMS Dart 427 FED M311s, ESS Tuning G4 Blower, DSX Triple FP Assembly, DSX FF, FIC1300, Mcleod RXT 1200HD, Edlebrock Pro Flo XT 1158whp 1017wtq. 2010 CTS-V A6 - "Stock" SOLD 630whp 658wtq 2024 F-150 RCSB 5.0 4x4 waiting for tunes... |
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06-03-2020, 08:38 AM | #14 | |
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Drives: 2012 2SS CAMARO 45th Join Date: Apr 2011
Location: St. Charles, IL
Posts: 18,663
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Quote:
It's all in the tuning. The stock FPCM need to be tuned otherwise the pressure will drop. Anytime you add a aux pump on the 5gen tuning is required. |
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