fuel pressure

[BINGchndlr]

i just installed a SX AFPR and gauge today
but i can't lower the fuel pressure back to stock still
i can back the adjusting screw all the way out and it'l still be above 30
am i doing something wrong?

its a B&M gauge

thanks

 

[SBstar]

Is this with the vacuum line attached or disconnected. If it's disconnected (which it should be whie adjusting fuel pressure) You should be adjusting it to 37 psi anyways.
http://dsmtuners.com/forums/showthread.php?t=186032
Here read this it may help you out some. If you have a logger and all you may want to adjust it such as this guy did until you don't have an increase in knock. If it is fine at 37 psi leave it there.

 

[BINGchndlr]

! im dumb
thanks

 

[SBstar]

Naw not dumb, just not thinking clearly. Happens to me all the time. Please leave rep points

 

[vr6chris]

yeah, also remember to always set the base fuel pressure with no vaccum to the fpr. it will drop once vaccum line is connected

 

[92GSXBaltimore]

i turned my base up to 44psi and tuned out the extra fuel with my afc2. Itll give you a little more availible fuel up top by increasing the amount of fuel availible going out the nozzle for a given pulse width.
gotta squeeze out what you can with stock 450's