I am new to this page and you guys seem to know what your talking about. I just broke my pressure regulator and bought a new AEM adjustable. My fuel pressure is all messed up so its running way to lean I wont even drive it right now. Its running at about 25 psi right now and I need to know what the stock pressure is so I can get an idea where to start. I also need to now what or if I should change the pressure because I have many upgrades like AEM cold air intake and CAM gears, Dc headers and custom exhaust, and of coarse plugs and wires. I also would like to know any tips on how to adjust mt vafc from apexi. I heard you can do a hell of alot with this thing and I dont want to kill my car. thanks

 

40psi - I read about some guy who got an fpr and said he cranked it to 45 and it was too high. He said he turned it down to 40 and was fine w/ bolt ons

 

Thanks alot man I have been trying to figure this out fo rabout a week now so you took a big load off my shoulders. Thnks again

 

Yup, 40PSI is the stock setting and were it should be

just a FYI, going to 41psi will NOT give U anything!, just make the car run rich and the ECU will inject less fule after a few trips to corect for it anyway. more fule than 15:1 A/F does not = more power

 

hey about the same reason but i have an 93 h22a1 wit skunk2 proseries racing cams n valve train also wit pro series cam gears just wondering if i should set it higher then stock specs..?? what is the stock fuel pres..? 4 my motor n where should i be at..??

 

b4 u go uping ur pressure check ur a/f ratio then go from there