Aeromotive 13113 Regulator, Single Spring Belt/Hex Drive EFI, 40-100 psi Perfect for any mechanically driven EFI fuel pump developing over 200 GPH at EFI pressure. Base pressure adjustable from 40-100 PSI. References Vacuum/Boost on a 1:1 ratio. Includes two boost line adapters, one barbed for rubber hose, the other for AN-04 braided line. (Prevents blow-off in high boost applications) Ports available for nitrous fuel supply, pressure gauges and transducers. (4) ORB-08 inlet ports, (1) ORB-10 inlet port and (1) ORB-10 return port