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Injector bores are 11mm
Mazda Rotor Engines
The direct-injected Subaru FA20F engine in particular has an inherent problem since there are no port injectors to clean the backside of the intake valves
Like our ignition harnesses they sport glue walled heat-shrink and braid to keep up with aesthetics while still being high performance rated
Radium FPR RA Fuel Pressure Regulator Kit - Subaru STI 08-21 gates thermostat Injector bores are 11mmThis 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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