So heres my story. My 90 hatch 5.0l was running fine til my return line blew a hole. So i got some both supply and return lines from the front all the way to the back. I changed them, and then the car started running pig rich. I checked, and cleared the codes, put a fuel pressure gauge off the schrader valve on. My fuel pressure pegged past 60psi! So i then changed the fuel pressure regulator to a Kirban adjustable. Fire up the car, and i get the same thing. It doesnt matter how much i adjust the regulator it still reads past 60psi. Any ideas?