Unless your running upgrade heads/cam/intake/fuel components I don't see the need YET for an adjustable regulator. Even with all my upgrades and 24# injectors...my pressure is at the stock setting of 39.
ok...i have an ajustable regulator that came with my car...i didn't know it until today...someone mentioned that even after i put in 24# injectors, cobra intake, 70mm throttle body, e303 cam and soon gt40 heads..that a stock fuel regulator on my 1992 would work better then my ajustable one...
MustangGT92 -
That depends on where you adjust the afpr to.
The only concern I have heard before that has not already been mentioned is with the larger 255lph fuel pumps. Some have said that the stock regulator can have trouble accurately controlling the pressure with the larger pump.
I don't have any experience there, just spreading the internet rumors