fuel press ? - Competition Diesel.Com

agamache · 06-15-2009, 12:28 AM

Hello all
I am planning on getting an sct x3 with x race tune (running edge with att now). My question is if get and air dog and a fuel line crossover , would this be enough to supply all the. Fuel I need and not run injector out of fuel

PSDPlayer · 06-15-2009, 05:57 AM

The airdog with a 50psi pump? Then yes. You will be good to go. If its just a common rail type lift pump then no.

Trusted · 06-15-2009, 10:20 AM

Fuel pressure is key with our setups. The factory spec is 55 + or - 5.

If you are getting an AirDog, make sure it is the stand alone (Airdog II I believe) otherwise they don't make enough pressure. Most are lift pumps designed to pump a high volumne but at relatively low pressure (15 to 20 psi range).

Your other option is to run the AirDog to the factory fuel pump.

Something else you may want to consider is our Stage I kit. Larger lines to the front of the cylinder heads. This not only increases the line sizes, but we also replace the small fittings and restrictive banjo bolts to help flow more fuel.

agamache · 06-15-2009, 10:52 AM

Thanks for the info. Trusted would the crossover line work or would i need the orifice, The reason i ask is the airdog will be returning fuel to the tank also

Trusted · 06-15-2009, 12:28 PM

If you use a lift pump (FASS or AirDog) to the factory fuel pump, then you need a regulator in the system (the factory one is located in the secondary fuel filter housing) and the fixed orifice kit will not work. So, a crossover line is what works.

If the AirDog that you plan on using is an AirDog II; which is regulated to 60 psi or wherever it will be regulated at, then the fixed orifice kit or crossover line will work. FASS recommends using a fixed orifice kit to help extend pump life, but since the AirDog II hasn't been released, I don't know if the AirDog will or will not.

06-15-2009, 12:28 AM	#1
agamache Name: agamache Title: Green Behind the Ears Status: Not Here Join Date: May 2009 Location: MT.VERNON,IN Member`s Gallery Posts: 97	fuel press ? Hello all I am planning on getting an sct x3 with x race tune (running edge with att now). My question is if get and air dog and a fuel line crossover , would this be enough to supply all the. Fuel I need and not run injector out of fuel __________________ 2004 F250 4X4 EDGE J/A MBRP 4" TURBO BACK EXHAUST COOLANT FILTRATION SYSTEM SOLD Now Have: 2005 GMC/Duramax CC, 4x4 Stock

06-15-2009, 05:57 AM	#2
PSDPlayer Name: PSDPlayer Title: Captain Negativity! Status: Not Here Join Date: Apr 2006 Location: Ft. Lauderdale, FL Member`s Gallery Posts: 3,284	The airdog with a 50psi pump? Then yes. You will be good to go. If its just a common rail type lift pump then no. __________________ 05 CC LB DRW Lariat 4x2 Dropped 3/6.

06-15-2009, 10:52 AM	#4
agamache Name: agamache Title: Green Behind the Ears Status: Not Here Join Date: May 2009 Location: MT.VERNON,IN Member`s Gallery Posts: 97	Thanks for the info. Trusted would the crossover line work or would i need the orifice, The reason i ask is the airdog will be returning fuel to the tank also __________________ 2004 F250 4X4 EDGE J/A MBRP 4" TURBO BACK EXHAUST COOLANT FILTRATION SYSTEM SOLD Now Have: 2005 GMC/Duramax CC, 4x4 Stock

06-15-2009, 10:20 AM	#3
Trusted Name: Trusted Title: Too Much Time Status: Not Here Join Date: Feb 2009 Location: Texas Member`s Gallery Posts: 761	Fuel pressure is key with our setups. The factory spec is 55 + or - 5. If you are getting an AirDog, make sure it is the stand alone (Airdog II I believe) otherwise they don't make enough pressure. Most are lift pumps designed to pump a high volumne but at relatively low pressure (15 to 20 psi range). Your other option is to run the AirDog to the factory fuel pump. Something else you may want to consider is our Stage I kit. Larger lines to the front of the cylinder heads. This not only increases the line sizes, but we also replace the small fittings and restrictive banjo bolts to help flow more fuel.

06-15-2009, 12:28 PM	#5
Trusted Name: Trusted Title: Too Much Time Status: Not Here Join Date: Feb 2009 Location: Texas Member`s Gallery Posts: 761	If you use a lift pump (FASS or AirDog) to the factory fuel pump, then you need a regulator in the system (the factory one is located in the secondary fuel filter housing) and the fixed orifice kit will not work. So, a crossover line is what works. If the AirDog that you plan on using is an AirDog II; which is regulated to 60 psi or wherever it will be regulated at, then the fixed orifice kit or crossover line will work. FASS recommends using a fixed orifice kit to help extend pump life, but since the AirDog II hasn't been released, I don't know if the AirDog will or will not.