RCM Parallel Fuel Rail Kit / Standard Fuel Regulator - UK, USDM & Euro Spec Models Interior Cleaning will slow down the wear

will slow down the wear of an OEM style tensioner

relay and fuse

with a adjustable type allows the fuel pressure to increase so it can withstand 100ps

Not suitable for 7 and 8 models

RCM Parallel Fuel Rail Kit / Standard Fuel Regulator - UK, USDM & Euro Spec Models Interior Cleaning will slow down the wearParallel fuel lines are a great addition to any engine, not only do they provide a more consistent volume of fuel to your injectors but they also yield key safety benefits. With Subaru's standard fuel system design, fuel is fed by a pump from the tank to the front of your car passing through the fuel filter (located in the engine bay) before being fed into the fuel rails. Fuel is then delivered to each cylinder one by one, starting with cylinder four.