Radium FPR Fuel Pressure Regulator Kit BLACK for Subaru STI 08-21 EJ257. 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 replaces the factory regulator and re-routes fuel to cycle through the engine’s rails before reaching the regulator, and returning to the tank. This is the preferred fuel line routing by Subaru tuners trying to address stumbling issues. The Radium Fuel Pressure Regulator offers adjustment from 20psi-up with a 1:1 vacuum reference. Interchangeable orifices allow the user to tune the regulator for any fuel pump flow. The kit installs in the same location as the OEM fuel pressure regulator. Also included are vacuum hose and fittings to re-route the vacuum reference line from the #4 cylinder runner to the intake manifold plenum for a stable vacuum signal. Please message us for a Return Authorization Number before sending anything back to avoid processing delays. Real Street Performance is unlike most “Race Shops”. We are a fully functioning wholesale and retail distribution warehouse in addition to a dyno-equipped tuning and engine building facility. Our sales center and order fulfillment center operates with state of the art, industry leading software that allows us to get you ALL of the parts you need for your build quickly and correctly the first time without the headaches or excuses. Sign up to our Newsletter. This item is in the category “eBay Motors\Parts & Accessories\Car & Truck Parts & Accessories\Air & Fuel Delivery\Fuel Injection Parts\Additional Fuel Injection Parts”. The seller is “realstreetrsp” and is located in this country: US. This item can be shipped worldwide.
- Engine Codes: EJ257
- Vehicle Make: Subaru
- MPN: 20-0265-00
- Brand: Radium Engineering
- Manufacturer Part Number: 20-0265-00
- Color: Black