Sorry for the long post... I installed the mopar stage 3 kit after it originally came out. It worked great for a couple of years. Then nothing but fuel issues after that. Went through several fuel pumps. Then finally determined it was the fuel system. Fuel pressure would drop at WOT. I replaced the entire file system with the AGP return line system and fuel pressure regulator. If I run the fuel pressure regulator non-boost referenced and just turn the pressure high enough the car runs perfect. If I try to run the fuel pressure regulator boost references car runs like crap. Fuel pressure drops at wot just like original stage 3 setup. Does anyone have any suggestions on why the pressure is dropping when I attempted to run the fuel pressure regulator boost referenced? I’m guessing what ever the source of the issue is, is also the same reason the original stage 3 fuel system was not running correctly.