Aftermarket Fuel Pumps

[dbshelton]

I want to get rid of the Dodge retro-fit in-tank pump on my 04 Cummins. I ordered a ProComp (Holley Clone) fuel pump to install on my truck. It's rated at 130gpm and the pressure is set to 14#. Do I need a regulator? What should my maximum fuel pressure be for this truck?

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2004 (early) Cummins 2500 2wd Quadcab, 5" FBD exhaust, BHAF with heat shield, ISSPRO gauges, Holley Black fuel pump with 1/2" lines and dual Filters, 1.5" front coil levelers, HTS valve body, Diablosport Predator

[SteveinAK]

I don't know the "max", but I've been running 20psi for a couple of years now with no CP3 problems.

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-Steve 2003 SO CTD 3500 SLT QC SRW 4x4, NV4500 5-speed w/ Fast Coolers, Donaldson muffler, Commander w/ Xzillaraider, S&B Intake, Kore leveling, BD E-Brake, Hellwig Sway-Bar, ATS Arc-Flow, ATS exhaust manifold, HE351 turbo and Glacier GFS-392.

[Twoforme2]

130GPM???

I hope you meant GPH. ALthough 7800GPH would definitely supply plenty of fuel.

AND is that rated at 130GPH AT 14psi?

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2007 2500 QC 4x4 5.9L,48RE w/ Goerend TC, VB and some billet thingies,DTT Shift Enhanser,Smarty, Edge EZ, AFE Stage II w/Pro Dry-S, FBD 5" Turbo Back,Amp Research PowerSteps, Superglide Hitch, Tekonsha p3 brake controller...much more to come!

[BBRam]

Max fuel pressure is not to big of an issue, the CP3 will return what it doesn't use. I see 50-60psi at WOT.

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03-3500, DRW, QC, 4x4, DTT Trans, Mag-Hytec, R700 BD Twins, BD IC Boots, BD Billet Flexplate, Lockup Switch, SMARTY TNT-R BETA/TS MP-8, Eliminator Fuel System, Floor It Stage 3 CP3 & Rail Cap, BIG Stix's by FTE, ARP Head Stud's, Springs, Fluidampr, ATS ARC-FLOW, AFE, Boost, Drive Pressure, Pyro, Fuel Pressure, Tran's Temp, Rail Pressure Gauge, GDP Ladder Bars, GrandRock 7" Miters. Old #'s (R/T .021, 60' 1.76, 1/4 ET 13.14 @ 100.45 mph)

[dbshelton]

Originally Posted by Twoforme2

130GPM???

I hope you meant GPH. ALthough 7800GPH would definitely supply plenty of fuel.

AND is that rated at 130GPH AT 14psi?

My fumble fingers! Maybe those are "Dog Minutes?"
That 130gph is free flow.

Thanks for the info.

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2004 (early) Cummins 2500 2wd Quadcab, 5" FBD exhaust, BHAF with heat shield, ISSPRO gauges, Holley Black fuel pump with 1/2" lines and dual Filters, 1.5" front coil levelers, HTS valve body, Diablosport Predator

[dirty454]

subscribing

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07 5.9 6 speed, 5in tough country, 37 toyo M/T's on 20" diamo's silencer ring MIA, 5" Expandit turbo back, Autometer gauges, SMARTY, EDGE EZ stack, Need a clutch!

When your only tool in life is a hammer you gotta treat everything like a nail!

[rufushusky]

Originally Posted by BBRam

Max fuel pressure is not to big of an issue, the CP3 will return what it doesn't use. I see 50-60psi at WOT.

In fact modded cp3s like to see higher fuel pressures. 14 is not high at all. What I have heard is the max fuel pressure will handle is about 100psi...not that I would recommend pressures that high.

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Dennis
04.5 Ram 2500 Reg Cab 4x4 5.9, 48re, AEM, Smarty, TS Ramifier, Banks High Ram,FASS HPFP, Boost/pyro/trans/FP/RP gauges, 5" Exhaust, Cat 2 micron fuel filter, Amsoil Bypass

Check out: Rig of the Month!
http://www.cumminsforum.com/forum/rig-month/

[dbshelton]

Finished my install of fuel pump, draw straw II, tank vent mod, new larger filter and separate water separator, 1/2" lines all the way to the injector pump. I haven't driven it yet, but my truck starts even quicker and it also idles smoothly. (It used to take 10-15 seconds to smooth out) My fuel pressure gauge should get here today. I left the stock filter inline for now too.

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2004 (early) Cummins 2500 2wd Quadcab, 5" FBD exhaust, BHAF with heat shield, ISSPRO gauges, Holley Black fuel pump with 1/2" lines and dual Filters, 1.5" front coil levelers, HTS valve body, Diablosport Predator

[anwfarms]

i got a blue and at stand alone (without stocker) i would get about 13-15 psi consistenly without a reg. i removed the fuel plunger on the pump and stretched the spring and now seeing 20-22 psi. been running the blue for about a year now.

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2003 QC DRW HO 6 spd 4x4 myspace.com/anwfarms.............BIG STIXX DIESEL PERFORMANCE

[dbshelton]

I installed a fuel pressure gauge at the stock filter canister and at idle, it's reading about 40 to 50#. Is this too high?

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2004 (early) Cummins 2500 2wd Quadcab, 5" FBD exhaust, BHAF with heat shield, ISSPRO gauges, Holley Black fuel pump with 1/2" lines and dual Filters, 1.5" front coil levelers, HTS valve body, Diablosport Predator

[rufushusky]

Originally Posted by dbshelton

I installed a fuel pressure gauge at the stock filter canister and at idle, it's reading about 40 to 50#. Is this too high?

The CP3 should be fine but that does seem like a lot for a holley pump...are the lines between the canister and cp3 stock?

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Dennis
04.5 Ram 2500 Reg Cab 4x4 5.9, 48re, AEM, Smarty, TS Ramifier, Banks High Ram,FASS HPFP, Boost/pyro/trans/FP/RP gauges, 5" Exhaust, Cat 2 micron fuel filter, Amsoil Bypass

Check out: Rig of the Month!
http://www.cumminsforum.com/forum/rig-month/

[dbshelton]

I changed all of the lines. Went from a 1/2" Draw Straw II in the tank to 1/2" lines to the CP3. They only reduce at the fuel pump and the stock filter canister.
I think maybe I'll disconnect the line at the CP3 and see just what kind of free flow I get into a bucket. Maybe I should add a regulator with a return?

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2004 (early) Cummins 2500 2wd Quadcab, 5" FBD exhaust, BHAF with heat shield, ISSPRO gauges, Holley Black fuel pump with 1/2" lines and dual Filters, 1.5" front coil levelers, HTS valve body, Diablosport Predator