i have a 93 cobra with the folloowing mods. stock bottom end, stock cobra upper and lower intakes,gt 40 turbo swril heads, 70 mm throttle body, vortech v1 supercharger pushing 6lbs,power pipe,25lb injectors,bbk equal leanth headers,off road h pipe flowmaster car back, 3.55 gears, bbk 255lph fuel pump and vortech boost apump inline pump. around 4000rmp it seems to cut out almost like its running out of fuel. i am going to be installing a adjustable fuel preasure regulator, but am not sure at what psi to set it at. any help would be great. thanks for the help