Originally Posted by pioneer4x4

I really don't know how these cars work with boost and the regulator, just form other stuff I have worked with (Old 2.2 Turbos) But if you get a test gauge for fuel pressure and can rig it up to the wiper area, you can see it while driving. Or if you have a dyno shop you can use. Depending on how bad you want to know. I have known of people to run without a hood so then can see an engine mounted fuel pressure gauge for testing. Never run one into the car, you don't want pressurized fuel having a chance to spray and ignite you!