put a 140 gph pump on my car, external...i have a mallory afpr...the 80 dollar 3 port with the bypass port....

the fuel pressure now stays at a constant 9 psi....no matter where i adjust the afpr....yes its all hooked up right.

so....does the afpr tach out at 9 psi and i could be running 40 psi or some crazy s....er...nevermind

the AFPR worked fine when i had the stocker in tank pump on it.....wtf is up with this now?

 

Did you bleed the air out of the lines like Mallory suggests in the directions?Otherwise it sounds like you are going to have to swap to a larger return line.

 

yeah i got it fixed, i metn to repost and say that...it took a larger return line to the fuel tank assembly....works fine now