2008-2009 Subaru Impreza WRX STi
PERRIN Performance Rotated Turbo Kits have been a staple in the Subaru performance world since the introduction of the STI in North America. You will find the PERRIN turbo kit on many of the best built race and show cars in the world. The demand for this type of quality turbo kit for the new generation of Subaru's has lead them to introduce the PERRIN Performance Rotated Turbo Kit for the 2008+ STI and 2008+ WRX.
This new generation of Rotated Turbocharger kit has all the quality and superb fitment of the older kit in a package that fits the newer cars. The kits come with PERRIN/Tial 44mm wastegate, black silicone couplers, red or black aluminum cold air intakes, fully polished 304 stainless steel up and down pipes and all the required installation hardware. They even pre-assemble the kit so all you need to do is hook up a couple oil/water lines, bolt it in and go.
To get this kit running you will need a high capacity fuel pump, larger injectors, and a method of tuning the combination.
So you want the most out of this kit? Look into a high flow 3" exhaust, high flow fuel rails, equal length header, Front Mount intercooler, Blow Thru boost tube, E.B.C.S., and high capacity clutch. In extreme applications you should install forged pistons.
Overall Kit Design
The PERRIN Rotated Turbo kits were originally designed for the customer that needed something bigger and more efficient than a stock location turbo replacement. A stock location turbo has 2 problems areas that cause inefficiencies and loss in possible overall horsepower: the intake path and placement of turbo. Both limit the size of turbo, and sacrifice intake path restrictions, again limiting potential horsepower.
PERRIN Rotated is Better!
The PERRIN rotated kit is just that, rotated! Because they rotate the turbo to the side of the engine they can use a larger, smoother and straighter intake system. , and pretty much any size turbo you want! The PERRIN turbo kit places the turbo in the optimum position to attach to almost every aftermarket front mount intercooler.
New Cold Air Intake Hose
Yes, Perrin's newly revised turbo kit includes a completely new 3" cold air intake system. This new inlet hose is designed to supplied fresh cold air to your Garrett GT turbocharger. The new intake has fittings for all your crank case, valve cover breathers, and other emissions control hoses. You will see 2 very important changes to Perrin's intake system.
-No MAF sensor housing = The MAF Sensor housing has been moved to Perrin's revolutionary new Blow-thru boost tube. The Blow-Thru boost tube places the MAF sensor inline between the intercooler and the throttle body. Now your ECU will receive a temperature correct reading.
-No BOV recirculation fitting = For the first time you can now safely use a Vent to atmosphere blow of valve on your Subaru! Because they moved the MAF sensor to the Blow-thru boost tube just before the throttle body now vent extra boost pressure without the risk of running lean due to a loss of metered air. Any air vented from the blow off valve is now before the MAF sensor allowing the ECU to always receive a accurate reading or air entering the engine.
PERRIN intake systems always include a high flow foam filter element, perfect for large turbo applications. Also included are silicone adapters, and vacuum hoses for the installation. The new 3" pipe aluminum piping look good and out performs previous intake designs.
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