my trucks been actin up and losin power at 2500 rpm so i replaced the fuel filters frp sensor and went ahead and did all routine maintenance, and its still doing it so i called the dealer and set it up to get the hpfp replaced, but i was talkin to a friend of mine and he said that on his cummins it did the same thing and it was his fuel rail pressure release valve, so my first question is does a 2008 f350 with a 6.4 have a fuel rail pressure release valve and if so where could i get a block off bolt or new valve. my second question is what psi should my fuel rail pressure be most of the time. my scanner will only read what info the truck stores and it says that the frp was 24,000 at 1/4 throttle when it threw the code? any help is greatly appreciated. i just dont want to spend 3000 on a part if i dont have to.