01 LA1 Fuel Pressure Regulator....what pressure?

[Calvin]

What is the pressure supposed to be from the 00+ LA1 FPR? I have heard both 52 and 55 psi? The pressure seems to have a significant effect on the BPCs I am calculating. I want to be dead on on the first crank.

Thanks
Kurt

[geldartb]

i have a 99 LA1 and my fuel pressure at the gaue is something around 37-38 at idle and 43-44 with with convertor lockup and speeding up. and about 40 with normal driving. and mines tuned by milzy. found this on another site Factory fuel pressure is 40 psi.

[AaronGTR]

On my '00 my pressure gauge used to read 48psi at idle and 55psi at WOT. That was basically stock too (no mods that affected the pressure).

[91BerettaGT]

On my '00 my pressure gauge used to read 48psi at idle and 55psi at WOT. That was basically stock too (no mods that affected the pressure).

Definately depends on the car i think to...

I have 01 Impala's at work, 60 psi WOT and 52 at idle. My 2002 Grand AM GT1 I had also concured the same results.

My 96 3100 FPR in my Beretta I had before I got the AFPR ran around 42 WOT and like 36-37 idle.

[AaronGTR]

Yes, I've heard similar things. Doesn't seem like we can really nail down one specific pressure for the 3400, but rather that it depends on the car and what FPR it has.

[Calvin]

wow 91BerettaGT, your swap sounds very similar to what I am doing. Do you have a site with details?

[geldartb]

mines a 99 grand am gt if that helps any but like i said before its been tuned by milzy, so i dont if that changes the pressure any.