F4i Fuel Pressure Regulator

The Fore Innovations F4i Fuel Pressure Regulator is engineered for demanding high-performance fuel systems. This unit boasts a robust construction featuring an FKM/Nomex composite diaphragm, ensuring compatibility with a wide array of fuels such as gasoline, race gas, ethanol, and methanol. However, MTBE is noted to reduce diaphragm life, and the regulator is not compatible with acetone or brake parts cleaner. The F4i offers precise fuel pressure control with a base pressure range of 25-70 psi and an impressive boost limit of 250 psi. Fine-tuning is made simple with a fine pitch adjustment screw. This regulator features four pressure ports (two ORB-8 female and two ORB-10 female) and one ORB-10 female return port, along with two NPT 1/8″ MAP reference ports. Fittings are not included, but a reversible stainless steel mounting bracket is provided. The F4i's design, with its multiple pressure ports, can simplify installations by potentially eliminating the need for Y-blocks and associated components.