1/14/2024 0 Comments Radium fuel pressure regulator sti![]() Fuel is only routed to the engine when there is demand. 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. Example 1: Vehicle: Mitsubishi EVO OEM Base Static Fuel Pressure: 43. The optional pressure guage kit 20-0386 can be installed into the unused 8AN ORB port on the regulator, as shown above Any dynamic fuel pressure created by a rising-rate FPR outside of this range is acceptable, but only when the base 'static' fuel pressure is set within these ranges and the vacuum/boost reference line is connected. ![]() 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 kit installs in the same location as the OEM fuel pressure regulator. These Bosch units are found in many applications, including:-Audi 1. 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. This universal Radium Fuel Pressure Regulator (FPR) is built around the common OEM Bosch regulator inserts. ![]() Fuel Hanger Surge Tank for Walbro GSS342 / AEM 50-1200 E85 (Pump Not Inc) BMW E9x. This is the preferred fuel line routing by Subaru tuners trying to address stumbling issues. Radium Engineering Surge Tanks 20-0470-00. Radium engineering 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.
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