Aeromotive 13101 EFI Regulator, A1000 Injected Bypass - Adjustable Base pressure adjustable from 40-75 PSI. Gasoline and alcohol compatible. Fuel pressure rises on a 1:1 ratio with boost. 1/8' NPT gauge port. P/N 13101 provides (2) ORB-10 inlet ports and (1) ORB-06 return port