Aeromotive Inc. is a true high performance aftermarket manufacturer specializing in fuel delivery and fuel delivery components. Utilizing aerospace tolerances and procedures, three generations of track experience, and a meticulous approach to engineering, Aeromotive Fuel Systems has become the absolute pinnacle of performance fuel delivery. Extreme Flow EFI Regulator Designed for use with Belt or Hex Drive Fuel Pumps. Compact, 2-Port Body with dual ORB-10 inlet/outlet ports and one ORB-10 return port.0.500 High Flow Valve/Seat, able to handle 7-26 GPM. Dual Springs expand operating pressure range while maintaining a low profile and reduced weight. Standard spring (installed) supports 30-75 PSI base fuel pressure. High Pressure spring (included) supports 75-120 PSI base fuel pressure. Supports vacuum and boost reference on a 1:1 ratio with PSI.