Ok this is a weird one...I have been installing a supercharger on my wifes car...COUGH a 91 z28 350 tpi car I know I know...its a chevy But FMUs are all the same no matter what car...anyways I cant get this FMU to work...its an ATI adjustable from 12-1 to 4-1 but it boost the fuel pressure does not SPIKE so I thought the FMU was bad so I ordered a rebuild kit for it did this yesterday and nothing doesn't spike the fuel up to were it should be...im lost I know I have the lines hooked up right from the regulator back to the return line to the gas tank...I have no idea what to do...this should work what am I missing???????