fuel pump pressure?

D

darkside03gt

Member

Feb 19, 2007

851

8

18

Sacramento CA

Jun 18, 2008

#1

• Jun 18, 2008

• #1

I am currently trying to get my supercharger tune dialed in and my tuner noticed that my fuel pressure is up above 60 at times. its a single focus pump with no other modifications. anyone know wtf it could be? because i sure a hell dont I thought it was normal with this pump.

 

the98stang

Active Member

Aug 12, 2005

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47

Clovis, CA

Jun 19, 2008

#2

• Jun 19, 2008

• #2

darkside03gt said:

I am currently trying to get my supercharger tune dialed in and my tuner noticed that my fuel pressure is up above 60 at times. its a single focus pump with no other modifications. anyone know wtf it could be? because i sure a hell dont I thought it was normal with this pump.

Click to expand...

Seems normal to me. Way better than not having enough fuel pressure that's for sure...

 

NO BRAKES

New Member

Feb 8, 2006

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Avon Lake, Ohio

Jun 19, 2008

#3

• Jun 19, 2008

• #3

what fpr are you running? and are you seeing this 60lbs of pressure under boost or regular driving?

 

SaleenGT2001

Well-Known Member

Jul 18, 2005

2,811

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Four Oaks NC

Jun 19, 2008

#4

• Jun 19, 2008

• #4

sounds right to me too.

 

2

2002BLGT

Well-Known Member

Dec 18, 2003

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59

Bedford VA

Jun 20, 2008

#5

• Jun 20, 2008

• #5

his pressure is over 60 at idle

 

D

darkside03gt

Member

Feb 19, 2007

851

8

18

Sacramento CA

Jun 20, 2008

#6

• Jun 20, 2008

• #6

its not right. over 60 at idle is wrong.

 

bhuff30

Founding Member

Dec 11, 2001

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129

Olathe KS

Jun 20, 2008

#7

• Jun 20, 2008

• #7

The FPR should be able to keep the fuel pressure down. I'd guess either the fuel pressure regulator isn't working or there is a restriction in the fuel return line (or the return is just plain too small).
At idle, you should get 30-34psi
At WOT with no boost, 40psi
At 10psi boost, 50psi
At 20psi boost, 60psi
See the trend?

 

D

darkside03gt

Member

Feb 19, 2007

851

8

18

Sacramento CA

Jun 20, 2008

#8

• Jun 20, 2008

• #8

bhuff30 said:

The FPR should be able to keep the fuel pressure down. I'd guess either the fuel pressure regulator isn't working or there is a restriction in the fuel return line (or the return is just plain too small).
At idle, you should get 30-34psi
At WOT with no boost, 40psi
At 10psi boost, 50psi
At 20psi boost, 60psi
See the trend?

Click to expand...

this is a returnless system.

 

SaleenGT2001

Well-Known Member

Jul 18, 2005

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58

Four Oaks NC

Jun 21, 2008

#9

• Jun 21, 2008

• #9

he didnt say it was 60 at idle. if it is at 60psi at idle there is a problem

 

SaleenGT2001

Well-Known Member

Jul 18, 2005

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58

Four Oaks NC

Jun 21, 2008

#10

• Jun 21, 2008

• #10

has the car been tuned??

after my PPRV delete my FP was jumping like crazy!! after the tune it was smooth again

 

DBMSTNG

I fantasize about it being BIG!

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Apr 23, 2002

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not quite here

Jun 22, 2008

#11

• Jun 22, 2008

• #11

your tuner needs to adjust the voltages for the new pump in the tune. if he doesn't the adaptive learning may correct it. if he is using SCT stuff to tune the car, he should have the file needed to run the focus pump.

 

D

darkside03gt

Member

Feb 19, 2007

851

8

18

Sacramento CA

Jun 22, 2008

#12

• Jun 22, 2008

• #12

I took care of it. thanks guys.

 

SaleenGT2001

Well-Known Member

Jul 18, 2005

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Four Oaks NC

Jun 22, 2008

#13

• Jun 22, 2008

• #13

so what was it??