Close
You have no items in your shopping cart.
Search

FPR Kit, 08+ Subaru STi - Radium

Manufacturer: Radium Engineering
SKU: RA-FPR-SUB
298.22 EUR
Incl. 21% VAT (Netherlands) | Change

FPR Kit, 08+ Subaru STi

*
Availability: Please select required attribute(s)
+ -

FPR Kit, 08+ Subaru STi

This kit is designed for use in the USDM 2008-2019 Subaru WRX STi (EJ257 only) and 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 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 hoses 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, as shown above.

Products specifications
EngineSubaru EJ25
Product TypeFuel System
Year2007-2014 (WRX Hatch), 2009-2011 (WRX Sedan), 2014-2018 (SJ; 4th GEN), 2009-2013 (SH; 3rd GEN), 2011-2015 (WRX Sedan), 2019-present (SK; 5th GEN), 2015-2017 (WRX FA20 S), 2014-2019 (WRX FA20 S), 2011-2013 (WRX Hatch), 2011-2018 (WRX Sedan)
MakeSubaru, Subaru, Subaru, Subaru, Subaru, Subaru, Subaru, Subaru, Subaru, Subaru
ModelForester, Forester, Forester, Impreza, Impreza, Impreza, Impreza, Impreza, Impreza, Impreza

At CBS Racing, happy and satisfied customers are our top priority.

We do not hide behind supplier or manufacturer warranty statements like: "No warranty on racing products". This is not okay! There must be a guarantee and a warranty on all products sold - they must work and fit your car as advertised.

We take great care in selecting what we sell and what we install on our build- and customer cars. So you can rest assured we got your back, and we will not leave you stranded with a bad or broken part.

At CBS Racing, we strive to be the first shop of choice for our fellow car enthusiasts!
And we plan to do that by taking care of our customers the way they deserve and deliver 110% service, always!

Thanks for trusting us!

Write your own review Close Review Form
  • Only registered users can write reviews
*
*
Bad
Excellent
*
*
*
*