hey guys i was just wondering what kind of fuel pressure should i have with a walbro 255 fuel pump, stock rail, and precision 525cc injectors on a stock gsr turbo. and i also have the stock fuel pressure regulator. is 60 to 65 to much?

Thanks

 

around 50 psi is stock so thats where u should be

 

60-65 when? 60-65 at idle is on the high side. At idle, stock should be around 42psi. Mine's always hoovered 40-45psi.

 

yea i dont understand why its so high when i only have the stock fuel pressure regualtor with a fuel pump and injectors. the car isnt tuned yet so i guess i need to go and get a adjustable regulator before. and its running rich too.

 

check your return lines. might be pinched somewhere.

 

running that pump with bigger injectors on your car will be pushing a lot more fuel thru. Thats why pressure is so high. Get the regulator and adjust before the tune. Thats my .2 cents

 

should be 42psi @ idle!

 

ok thanks guys can i mess something up real bad untill i can get one? i want to go for a test drive i just got the car finished.

 

im runnin a single walbro intank to a bosch 044 to injector Dynamics 1000cc injectors and a crappy B&M FPR.. when warmed up and idling right my Pressure is or can get as low as 20-25psi... when im barely on the throttle drivin down the HWY @ 3k rpm its about 65psi then when i get into the throttle a lil bit more the needle will jump up n bounce off of 80psi n settle around 75psi. .. my old setup was similar to yours but with RC-750's my FP was the same if not a few psi higher than what ur seeing now

 

ok thanks for all the help. because i know im running rich but its just till i see my tuner in the next few weeks. i just finished the car like yesterday. Im just curious if i should spend some more money on a regulator.

 

i run 55psi base pressure

 

i also run 50 psi aeromotive fpr and precision 1000cc injectors

 

if hes getting tuned, it doesnt really matter whats his psi is. it just has to be stable

 

yea im sure its stable at 65-70 but is it still safe to drive the car till i see him? can more fuel hurt my motor?