Radium FPR RA Fuel Pressure Regulator Kit - Subaru STI 08-21 TS-0404-1024 Turbosmart Upgraded Vacuum-operated Wastegate Actuators

Turbosmart Upgraded Vacuum-operated Wastegate Actuators have been developed to provide the maximum possible boost response for your factory frame turbocharger

If preparing to use aftermarket fuel injectors

Drop n on stock retainers at 1

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usually avoidable by opening the hood but now a flick of a switch makes life easy

Radium FPR RA Fuel Pressure Regulator Kit - Subaru STI 08-21 TS-0404-1024 Turbosmart Upgraded Vacuum-operated Wastegate ActuatorsThis 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