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Radium Engineering "conversion" fuel rails convert the OEM side feed fuel injector setup to top feed allowing the use of high flow fuel injectors (not included)
Introducing our Heater Hose Kit
Through this partnership
We're very happy to release this one of a kind Billet Oil Cap to suit all your favourite engine models
Both kits are compatible with all Radium Fuel Rails for the Subaru EJ engines (excluding 20-0499 Fuel Rails)
Radium FPR RA Fuel Pressure Regulator Kit - Subaru STI 08-21 Category_Catch Cans and Tanks Radium Engineering "conversion" fuel railsThis 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
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