So i took the winter build out on the road today for the first time. It seemed to run pretty good even for having a 2700 stall in it. However i am getting a pressure regulator performance code and i have twin fuelers. is there a process for distinguishing which one is bad besides changing them out. I pray to god its not the one in the valley, cause i will probably have to pull the motor to get it out, considering the intake is a mother to get off.