stock Fuel Rail How much can it handle

1

1fast95stang

New Member

May 19, 2008

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Jul 8, 2008

#1

• Jul 8, 2008

• #1

I have a 1995 mustang GT just got done putting a procharger on it. And during my tune i was told that the stock fuel rail wasnt able to get enough fuel to the injectors. does anyone know the limits of a stock fuel rail. I have 42lb injectors, 255lph pump and we were getting about 10 pounds of boost when it would lean out. Any ideas??

 

ShortThrow50

Member

Oct 22, 2006

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Pa

Jul 9, 2008

#2

• Jul 9, 2008

• #2

at least 550-600hp. youyr hardly even near that. sounds like a different problem you have

 

Flavadave4

Active Member

Nov 28, 2003

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Utica, NY

Jul 9, 2008

#3

• Jul 9, 2008

• #3

Well...The regulator controls how much pressure is in the rail. i would assume you have an adjustable regulator and your tuner knew to adjust it but thats where i would start looking. Fuel pump and filter might be the problems as well.

 

ShortThrow50

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Oct 22, 2006

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Jul 9, 2008

#4

• Jul 9, 2008

• #4

Flavadave4 said:

Well...The regulator controls how much pressure is in the rail. i would assume you have an adjustable regulator and your tuner knew to adjust it but thats where i would start looking. Fuel pump and filter might be the problems as well.

Click to expand...

If i was the OP i would seriously consider going to a diff tuner

 

BK_CAULEY

it's built for speed not longevity, woman

Dec 26, 2006

0

10

49

Thomasville, ga

Jul 9, 2008

#5

• Jul 9, 2008

• #5

Did you use the supplied FMU that came with the kit? I cant tell you how many problems i had with mine from ATI.

and if you arent using the supplied FMU you are going to have to have an adjustable regulator and a competant tuner

 

Flavadave4

Active Member

Nov 28, 2003

1,044

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Utica, NY

Jul 9, 2008

#6

• Jul 9, 2008

• #6

BK_CAULEY said:

Did you use the supplied FMU that came with the kit? I cant tell you how many problems i had with mine from ATI.

and if you arent using the supplied FMU you are going to have to have an adjustable regulator and a competant tuner

Click to expand...

Good point, alot of people view the FMU setup as a band-aid anyway.

 

LiquidGT

Member

Oct 8, 2007

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Near STL hell

Jul 9, 2008

#7

• Jul 9, 2008

• #7

The 94-95 Mustangs had the big fuel rails, I read somewhere that they flow nearly as much as aftermarket rails, they're an upgrade for a fox. Look someplace else besides the fuel rails.

 

2000xp8

SN Certified Technician

Aug 8, 2003

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NJ

Jul 9, 2008

#8

• Jul 9, 2008

• #8

Is the fuel pump a 255lph High pressure gss340, or the standard 255lph, makes a difference on high horsepower supercharged cars.

 

1

1fast95stang

New Member

May 19, 2008

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Jul 9, 2008

#9

• Jul 9, 2008

• #9

1fast95stang said:

I have a 1995 mustang GT just got done putting a procharger on it. And during my tune i was told that the stock fuel rail wasnt able to get enough fuel to the injectors. does anyone know the limits of a stock fuel rail. I have 42lb injectors, 255lph pump and we were getting about 10 pounds of boost when it would lean out. Any ideas??

Click to expand...

I am making about 42 psi at the fuel rail, and when i get on it it jumps to around 50-53 and never drops?? any one know why the left bank would be running lean