i installed a walbro 255 fuel pump and now my fuel pressure is stuck at 65 psi. when i had the stock fuel pump in, everything ran just fine.. fuel pressure was adjustable with stock pump.. .. anyone seen or heard of this? the first time it happened i thought it was a bad pump, so i bought another one. and samething.. so i know it can't be the pump.. it has something to do with my car.. help!

 

if you figure out my problem i will pay pal you 5 dollars.. i know its alot but... im willing to pay for free information.. thanks

 

Stock fpr or is it possibly a b&m unit.Out of the box B&M fpr has limited flow.

 

check this article, i've done this on pretty much all the stock regulators i use with the 255lph pumps. i haven't had any problems with this method http://www.theoldone.com/articles/regulator/

 

i have a sycronic fuel pressure regulator and i dont want to drill it.. so i guess ill try picking up a b&m one and post how it goes..

 

the AEM unit flows enough to regulate correctly with the larger pump.

the B&M strap on unit is a crappy way to go IMO. I had one, took it off. Tune the car with the right pressure and it's pointless. Not to mention adjusting it screws up your tune.

Stock FPR with the hole in it like BadWay posted or get something that will outflow your pump for sure.