how high is your fuel pressue?

[86_sports_1jz]

i was just wondering how high is your fuel pressure and how high have you pushed it. as of right now mine is at about 56 psi and i was thinking about pushing it higher cuz i'm still on the 370s.

 

[suprahero]

Mine is at 35psi with the vacuum off.

 

[di_rosa]

25psi with vac on and 720's

 

[GotTurbos?]

38psi vac off. and 550's

 

[figgie]

i was just wondering how high is your fuel pressure and how high have you pushed it. as of right now mine is at about 56 psi and i was thinking about pushing it higher cuz i'm still on the 370s.

56 psi base?

what fuel pump?

 

[tissimo]

43-45 w/ vac off

 

[annoyingrob]

56 psi base?

what fuel pump?

I would like to know that too. you're going to be running into some serious flow limitations if you're running a single pump at that pressure.



I run 30psi base with the vac off, which is low, I just haven't bothered to raise it as I'm lazy.

 

[Mischief7m]

why do some people run vac off and vac on? is there a benefit on either side?

 

[bhg4life]

The proper way to measure your baseline fuel pressure is by temporarily removing the vacuum line to the FPR. When you drive the car, you always have the vacuum line on.

why do some people run vac off and vac on? is there a benefit on either side?

 

[86_sports_1jz]

i'm using walbros with dash 8 fuel lines