Did you get the right Fuel Pressure Reg.? I mean did you get an aftermarket one that was diff. from what OE calls for. Or has the car been tuned and you got the wrong Reg? I mean I have no idea where to begin on this since I can only do so much to a motor but I'm just trying to think of the basis based on what you have said.
'99 White Camaro
Tyler H. or "White" for short.