Aeromotive 13105 Regulator, Compact EFI, Billet, Adjustable, EFI, (1) AN-6 male inlet and return Pressure Range: 30-70 Adjustable from 30-70 PSI. Equipped with removable AN-6 male fittings for inlet and outlet ports, eliminates the need to buy additional fittings and O-rings. Dedicated, 1/8 NPT gauge port located opposite the side inlet. Fuel pressure rises on a 1:1 ratio when referencing boost