Radium FPR RA Fuel Pressure Regulator Kit - Subaru STI 08-21 gates thermostat while still offering the performance

while still offering the performance and sound of a vent-to-atmosphere BOV when the going gets harder

Injector bores are 11mm

This gasket is used for Radium fuel cell fill necks

Mitsubishi Lancer Evolution 8

Radium FPR RA Fuel Pressure Regulator Kit - Subaru STI 08-21 gates thermostat while still offering the performanceThis kit is designed for use in the USDM 08 21 Subaru WRX STi (EJ257 only). It replaces the OEM fuel pressure regulator and damper assembly, shown below. The factory STi fuel line routing uses a quasi dead end system that circulates fuel through the regulator, bypassing the engine. Fuel is only routed to the engine when there is demand. The Radium FPR kit re routes fuel to cycle through the fuel rails before reaching the regulator and returning to the