Product Description
- 2008-2014 STi
- 2015-2021 STi
- Brand: Radium Engineering
- Manufacturer's Part Number: 20-0965
- Manufacturer's Warranty: 12 Months
- Superseded From: 20-0265-00
- Condition: New Product
FITMENTS:
Subaru
| Manufacturer's Description: Description: This 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 tank. This is the preferred fuel line routing by Subaru tuners trying to address stumbling issues. 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 more stable vacuum signal. The optional pressure gauge kit 20-0386 can be installed into the unused 8AN ORB port on the regulator. Included: • Fuel Pressure Regulator • Hoses • Fittings • Necessary Hardware for install Features: • Barbed Fitting: A black zinc-plated 3/16" (5mm) barb machined from high strength steel that is compatible with the following vacuum hoses: 5/32" (4mm), 3/16" (5mm), and 7/32" (6mm). • 3AN Male Fitting: A black zinc-plated adapter machined from high strength steel that is compatible with 3AN hose ends. • Push-To-Connect: A nickel-plated brass fitting with Buna-N O-rings that is compatible with hard plastic 1/4" OD tubing. • Vacuum Plug: A black oxide stainless steel screw that is used to maintain a constant (non dynamic) fuel pressure. |
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