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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.
Rotated is Better! The Perrin rotated kit is just that, rotated! Because Perrin rotates the turbo to the side of the engine we can use a larger, smoother and straighter intake system, and pretty much any size turbo we want! The PERRIN turbo kit places the turbo in the optimum position to attach to almost every aftermarket front mount intercooler. Cold Air Intake Perrin's turbo kit includes a complete 3" cold air intake system. This new inlet hose is designed to supplied fresh cold air to the Garrett GT turbo. The new intake has fittings for all your crank case, valve cover breathers, and other emissions control hoses. This intake system has no MAF sensor housing. The MAF Sensor housing has been moved to the Perrin Blow-Thru Boost Tube (sold separately). The Perrin Blow-Thru boost tube places the MAF sensor inline between the intercooler and the throttle body. Now the ECU will receive a correct temperature reading. There is also no blow-off-valve recirculation fitting. For the first time you can now safely use a vent-to-atmosphere blow of valve on your Subaru! Because Perrin moved the MAF sensor to the Perrin Blow-Thru Boost Tube just before the throttle body, you can now vent extra boost pressure without the risk of running lean due to a loss of metered air. Air is now vented before the MAF sensor allowing the ECU to receive an accurate reading for air entering the engine. Perrin intake systems 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 looks good and out performs previous intake designs. Uppipe The Perrin Rotated Kit uppipe is a TIG welded, CNC mandrel bent, 2" 304SS tube with .500" CNC cut flanges. The external wastegate is plumbed into the uppipe with a smooth transition from the wastegate to the exhaust system allowing for smoother exhaust flow and greater control of boost levels. The uppipe is designed to bolt to a factory exhaust manifold for those who choose to use the stock manifold. We do recommend that you consider upgrading to a Perrin Performance exhaust header (sold separately). It is a great way to lower the spool RPM, and make more power throughout the RPM band. Downpipe The downpipe is TIG welded, CNC mandrel bent, 3" 304SS tube with .500" CNC cut flanges. The Perrin downpipe features an auxiliary dump tube to recirculate exhaust gasses from the waste gate back into the exhaust system eliminating the risk of fire and melting components from high heat associated with wastegates that just dump under the hood. The Perrin downpipe dump tube features a floating flange design which can move and adjust to the extreme exhaust temperatures. The tight slip fit allows for expanding and contracting of the wastegate dump tube while still proving a nice tight seal. This slip fit also allows for easy quick removal of the wastegate with out having to unfasten V-band clamps, or flange connections. At its base the downpipe features an exhaust flange designed to bolt up to your OEM catback exhaust. In turn, most aftermarket catback exhausts will also bolt right up to the Perrin turbo kit and any of the Perrin Catback exhaust systems will bolt up perfectly too of course. Perrin/Tial 44mm Wastegate This Wastegate is a key part to controlling boost. Perrin chose the Tial 44mm with V-band connections. V-band connections allow for a tighter more compact install of the turbo kit. Tial is a premier brand specializing in wastgate design. Their high quality NiCrFe based alloy valves and 347SS valve housings will offer longer product life compared to competing designs. A 17-7 PH Stainless Steel actuator spring gives consistent pressure at high temperature, resisting "relaxing" at temperature to 900F (483C). The 44mm model features a larger diameter valve compared to other kits, which makes for flawless boost control. A 14psi WG spring is included with the kit but many other spring choices exist! Most PERRIN turbo kits come with two exhaust housing options. .63AR, and the .82AR. The AR in simple terms is the overall size of the housing. A larger number indicates a freer flowing housing. A larger housings flow more air, but at a lower velocity which in turn has less energy spool the turbo. Though more airflow does equal more upper end horsepower, a larger AR will increase boost lag. The smaller AR. will spool the turbo faster it will have lower horsepower on the upper end. Perrin Rotated Turbo kits include everything you need to complete your already properly tuned STI. Add fuel system support (fuel pump, injectors, and rails) and proper ECU tuning to ensure proper and safe operation. Add an upgraded intercooler, clutch, header, and catback exhaust for optimal results and you will be ready to claw apart the surface of your local racetrack! Perrin turbo kits are not for the faint of heart and it is best to speak to a qualified engine tuner before making your turbo and supporting parts selections. Please do not hesitate to contact us for help with your selections. We will be glad to help you make sure that you've covered all bases and that your turbo and supporting parts setup will work together to achieve optimal results. We strongly recommend engine internal upgrades for those looking to exceed 300whp with an STi. Includes: - Rotated Turbo Uppipe - Rotated Turbo Downpipe - GT Turbo Assembly - Wastegate - STI oil line with female fitting (WRX oil line with banjo fitting is ordered separately) - Gasket set (T3 inlet, Turbo outlet, GT oil drain, 3" gasket, (2) restrictors) - Banjo Coolant Sets (M14 banjo bolt, M14 banjo fitting, (2) M14 washers) - GT oil drain flange - 3/8NPT- 1/2" barb 45 degree fitting - 10mm x 1.25mm Studs - M8 x 20 Socket cap screws - M8 x 25 Socket cap screws - 1/2"-3/8" reducers - 1/2"-5/8" reducers - 3/8" reducer - #3 hose clamps - T-bolt 175 size - 8 PERRIN PYROshield - 1/2" Fuel hose - 6 Pushlock coolant hose - 5/32" vacuum hose - Zip ties - Aluminum 3" Turbo Intake (Polished, Red Wrinkle, or Black Wrinkle) - 3" Silicone Reducer coupler (Black coupler for red, or black pipe and Red coupler for polished pipe) - 2"-2.25" Silicone Jog coupler (Black coupler for red, for black pipe and Red coupler for polished pipe) - 3"ID 2 piece air filter - Size 64 hose clamp - Size 48 hose clamp - Size 36 hose clamp - Size 6 Micro hose clamps - 1/2" tees - 1/2" straight connector - 3/8" Straight connector - 3/8"-5/16"connector - 5/32"-1/8NPT fitting - 1/2" fuel hose - 1/4" fuel hose - 5/32" Vacuum hose - Instructions GT3076R.82AR
GT3582R.82AR
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