Adjustable Fuel Pressure Regulator Kit

The Perrin Performance PSP-FUL-301 Adjustable Fuel Pressure Regulator Kit is engineered to address fuel delivery challenges in high-horsepower Subaru WRX STI models from 2008 to 2015. It allows for the necessary fuel delivery to match increased power output without introducing problems like excessively high idle fuel pressure. Constructed from durable 6061 billet aluminum with a sleek black finish, the PSP-FUL-301 features six ports for maximum fuel delivery flexibility, accommodating various fuel rail configurations. It is capable of supporting over 1000 horsepower and allows for fuel pressure adjustments ranging from as low as 20 psi up to the maximum output of your fuel pump. The standard 1/8-inch NPT fitting is compatible with most fuel pressure gauges and senders. Notably, this FPR can be installed without requiring ECU recalibration or reflashing, making it a practical upgrade for those looking to use higher-flow fuel pumps or convert to top-feed injectors when used with compatible fuel rail systems. It also includes a "privacy" port for discreet sensor and gauge mounting.