EZ Pressures??

[AK RAM]

Originally Posted by RDyson

AK and Tomey, You have injectors. How does that effect rail pressure? Will you have less than my stockers?

When just driving normally, all of our pressures should be relatively the same with all else (RPMs and box power level) being equal. If there is a difference, we both have modified injection pumps, so our rail pressure should technically be a tad higher if anything. When the boxes get turned up is where injectors show a difference. With a stock injection pump, you can pull rail pressure down much, much easier with aftermarket injectors installed. This will only be at wide-open-throttle and is not necessarily a bad thing.

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03, 4X4, QUAD, LWB, Standard Output, 47RE, 3.73, ATS TC/VB, DTT Trans/Billet, Flex Plate, TorqLoc, RAD, Twins, Snow, Hot Cp3, Injectors, Cam, 315s, 8,200 lbs wet.
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[Tomeygun]

BTW - last night on EZ level 3 - from 65mph to 100

Rail pressure went to 26.1k (read by tst) and held till I lifted...

That modded CP3 must be doing something for SURE!

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Tomeygun - St. Louis, MO

Truck: '03 3500 QC, S.O. Cummins
Fuel: PMCR by TST, F1 Flux 2's, GDP WALBRO Kit, Floor-It CP3
Air: Sledpuller 66 by HTT
Trans: SBC DD3600(sprung), SRT-10 Shifter row'n the gears
$$Wants$$: F1 Hellfire's, TireGate, GDP Ladder Bars

604 hp DYNO Run

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[MikeyB]

I keep my EZ on level 2 for everyday use. I will only switch to level 4 when playing.

MikeyB

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'03 2500 QC SWB 2wd, 305/555, NV5600, 3.73 LS, Airbox mod w/Amsoil Ea, Fogzilla mod, Adjustable boost elbow, PML diff cover, Westach boost/EGT gauge, Line-X, Sirius, Toyo OC AT 285/70/17 E, Daystar 1.5" lift, Monroe Reflex, Raptor RP100, SMARTY, Lazarsmith Intake

[RDyson]

Rail pressure went to 26.1k (read by tst) and held till I lifted...(Tomey)

Tomey, is that as high as the TST reads? Is the rail pressure actually higher? At what pressure is the relief valve supposed to lift? 28K or so?

Took it for a drive today to see what it would do. EZ/3, TST 7/7. From 65-108, this thing flies. Was holding about 1/2# of fuel pressure and hit 48# boost. :fist:

With the EZ on level 1, I could only hit 40#. It was still pulling hard untill it defueled.

I think I finally opened the wastegate on the SPS-62. At least I heard a different sound while she was wound up.

That much power sure could be addicting!!!

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03 SO/Auto, QC/4X4, TST/Smarty, Boost/Fuel/Pyro/Rail Pressure, SPS-62, Goerend, Amsoil 4510, Walbro, Arson CP3 Kit, GDP Power-Flo, Grid Eliminator, Fuel Tank Vent Mod, Donaldson 51", Flux 1's, ARP, 605/1172, 13.16@108.2

[Tomeygun]

Originally Posted by RDyson

Rail pressure went to 26.1k (read by tst) and held till I lifted...(Tomey)

Tomey, is that as high as the TST reads? Is the rail pressure actually higher? At what pressure is the relief valve supposed to lift? 28K or so?

Took it for a drive today to see what it would do. EZ/3, TST 7/7. From 65-108, this thing flies. Was holding about 1/2# of fuel pressure and hit 48# boost. :fist:

That much power sure could be addicting!!!

I think the TST should rea until 26.4k psi based upon what I hear the sensor saturation point is...

And man it sounds like a better fuel delivery system is in order for you!
1/2lb just wont cut it for the big HP

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Tomeygun - St. Louis, MO

Truck: '03 3500 QC, S.O. Cummins
Fuel: PMCR by TST, F1 Flux 2's, GDP WALBRO Kit, Floor-It CP3
Air: Sledpuller 66 by HTT
Trans: SBC DD3600(sprung), SRT-10 Shifter row'n the gears
$$Wants$$: F1 Hellfire's, TireGate, GDP Ladder Bars

604 hp DYNO Run

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[RDyson]

Your right. WALBRO is on the list next.

It did make smooth power though. My son was with me on that run. He was pretty surprized that a "big ole slug" would "git it" that fast!

Now all he want's is for me to stick my stock turbo under the hood of his Chevy gasser. Yea right!!!!

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03 SO/Auto, QC/4X4, TST/Smarty, Boost/Fuel/Pyro/Rail Pressure, SPS-62, Goerend, Amsoil 4510, Walbro, Arson CP3 Kit, GDP Power-Flo, Grid Eliminator, Fuel Tank Vent Mod, Donaldson 51", Flux 1's, ARP, 605/1172, 13.16@108.2

[Dodgezilla]

RDyson, I have a RaceAntiDefueler that would keep you from defueling if you want to enjoy that power a little more.... Works very well and it's selling cheap in the classifieds!!!!

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SOLD!!! 08 Ram 2500 Mega 4x4,68RE,6.7,Loaded Laramie,SRT10 hood,Sunroof,DVD,Nitto 285s,Polished Alloys,Fogzilla,Rear Spoiler,MOPAR Grill Guard,H&S StageII,AFE Drop-In
Looking for my next truck. Do you have it?

[Jef]

im torn on this fuel pressure issue??? if you run bigger injectors you can run on settings that allow for more pressure, right?? but now your starving the CP3 for fuel at WOT, so you get the fuel system upgraded it seems like at that point it would be even harder on the new injectors cause you would have more volume of fuel at the same pressure?? how do you know how to balance it all out? what are the ideal rail pressures to look for?

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04 reg cab 2500, 2wd, 6spd/bd short shift, MT wheels/tires, daystar coil spacers, bully dog power pup, quad race, F1 40hp, Walbro 392/big line kit, intake/exhaust/guages, southbend conofe and lots of purdy n shiny stuff

[Tomeygun]

Originally Posted by Jef

im torn on this fuel pressure issue??? if you run bigger injectors you can run on settings that allow for more pressure, right??

well... not really, you can try but most Cp3's will not kep up with a big set of injectors and a super long injector pulse made by a box/programmer - Injector science on a 3rd gen is much more then big holes/big fuel like on a 2nd gen

Originally Posted by Jef

so you get the fuel system upgraded it seems like at that point it would be even harder on the new injectors cause you would have more volume of fuel at the same pressure?? how do you know how to balance it all out? what are the ideal rail pressures to look for?

For example, F1diesel injectors are made for high pressure and flow - no issue of failure I have ever heard of - As well when you mention upgrade fuel system, you have the CP3 and the lift pump - Both need to be addressed for high hp that is clean and smooth

I look for the highest RP that the CP3 can sustain - I can hold 26k at the rail on a 60-90mph run. Higher than that and I lose rail (though I added duration) thus netting same or less hp and more smoke/egt

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Tomeygun - St. Louis, MO

Truck: '03 3500 QC, S.O. Cummins
Fuel: PMCR by TST, F1 Flux 2's, GDP WALBRO Kit, Floor-It CP3
Air: Sledpuller 66 by HTT
Trans: SBC DD3600(sprung), SRT-10 Shifter row'n the gears
$$Wants$$: F1 Hellfire's, TireGate, GDP Ladder Bars

604 hp DYNO Run

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