Aeromotive Belt Drive Pump EFI Regulator Aeromotive Belt Drive Pump EFI RegulatorUltra-High Flow EFI Regulator, adjustable from 40-100 PSI. Engineered for our Belt-Drive and Hex-Drive Fuel Pumps, the Belt Drive EFI Regulator is suitable for... MSRP: Was: Now: $379.95 Add to Cart