450 to the crank i guess could be possible so i guess your right there. I wasnt sure. And also the FPR is mainly for idle and very low psi fuel pressure correct?

 

The stock FPR is a 1:1 FPR too so it's on as soon as the car is started up and ran through the rev range just like an AFPR. The reason it get overrun is because of that tiny return tube, well the entire fpr is tiny. It has a tiny diaphram that is open and closed by the hg tube that is housed within the tiny casing. It's very easy for it to get overrun with a larger flowing pump.

 

660hp injectors,255 fuel pump, regulator, and filter then im good

 

fixed

 

thanks alot man