Perrin Adustable Fuel Pressure Regulator Kit for 08+ Subaru STI PSP-FUL-301
The PERRIN Fuel Pressure Regulator is designed with adjustability and high-flow fuel regulation in mind that works with fuel systems ranging from stock setups to 1000+ horsepower setups and the best option to fix the stumbling issue present in 2008+ STIs. Of the (6) -6 ports on the Adjustable Fuel Pressure Regulator, (4) of these […]