Aeromotive Extreme Flow EFI Regulator 13134 - Extreme Flow EFI Regulator. Designed for use with Eliminator, Pro-Pump and Dual A1000 fuel systems. Compact, 2-Port Body with dual AN-10 inlet/outlet ports and one AN-10 return port. 0.313” High Flow Valve/Seat, able to handle 3-9 GPM Fuel Pumps. 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.