my buddy has 2012 5.0 with Paxton supercharger. just replaced oil pump gears and got it all back together. took it for a ride, made some pulls on it in about a 20 min drive. got to a location, hung out, then went to make a pass, did a burnout, after the burnout, the car died. It won't crank back up. Fuel Pump is good, just checked it. It acts like it wants to crank but it does act like its not getting fuel. fuel pump is pumping 50 lb. pressure. He does have a fuel relay on the pump could it be that? Or what do yall think.