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Rotated Turbo Tuner Kit for 2002-14 WRX & 2004-18 STI


5 Hours

Part Numbers
PSP-TKS-855BK = 02-07 WRX/STI, Black intake
PSP-TKS-855RD = 02-07 WRX/STI, Red intake
PSP-TKS-856BK = 08-14 WRX/08-18 STI, Black intake
PSP-TKS-856RD = 08-14 WRX/08-18 STI, Red intake

WARNING: This product can expose you to chemicals, including Lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to

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Sale: $1,305.00
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PERRIN Rotated Turbo "Tuner" Kit

The Rotated Turbo Tuner kit is designed around the customer who already may have a turbo, and/or a wastegate, and is looking to install them onto their WRX or STI. Every kit includes all necessary items (except turbo and wastegate) to install on your WRX/STI (with Front Mounted Intercooler). With many years of production under our belts, you will feel confident that this kit will last and perform. PERRIN Turbo kits are not for the faint of heart and it is best to speak to a PERRIN specialist before ordering. Let us help choose the exact combination of turbo and exhaust housings to meet your needs. We can help you choose the extras that make this project successful from things like ECU tuning tips, recommended engine internals, injector size, fuel pumps, etc.

Note: These kits are built to order, so please allow at least (2) business days for shipment.

Rotated Turbo "Tuner" Kit Design

PERRIN Rotated Turbo Tuner Kits are designed for customers that are looking for 400+HP but may already have a turbo or wastegate. This option allows customers an inexpensive way to get into our turbo kit or allows them to build their car part by part. Like our complete kits these tuner kits are designed around Garrett GT30R, GTX30R, GT35R and GTX35R turbochargers, which can support 600+ Wheel HP! Each kit includes Intake system, 3" downpipe, boost tube connection for Front Mounted Intercooler, and all other parts needed for installation for those who already have a Front Mounted Intercooler.

Rotated is Better!

The stock location for the turbo is limited by its narrow pathway for the intake which travels under the intake manifold. This narrow path is no where large enough for 3"-4" intake systems to function. By rotating the turbo off to the side, this allows for a larger intake, makes a smoother transition from the Up-pipe to the downpipe, creates space for a large external wastegate, and of course almost 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 as well as clear all OEM parts ensuring no damage from the extreme temps.

Choose Your Own Turbo

Our kit is designed to fit popular Garrett GT turbos which is roughly 18 part numbers ranging in HP from 400-750HP. Beyond this there are many other companies that offer custom versions that will fit our kit. Blouch Turbo, ATP, as well as Precision Turbo, and Tial Sport offer turbos that will fit. Make sure you tell them you need a "GT style, T3 Inlet, with 3" 4-bolt outlet turbine housing."

How much Horsepower will this support?

The PERRIN Rotated Tuner Kits are able to produce as much HP as the turbo you choose allows. If you are buying this kit and choosing your own turbo, keep in mind the kit is designed to work with turbos ranging up to 750 engine HP. If you interested in buying a turbo from us, give us a ring and we can help you decide which one fits your needs best!

Large 3" Cold-air Intake

Every kit comes with a 3" cold air intake system that reaches down to your inner fender to supply fresh cold air to your Garrett GT turbo. Each intake includes fittings for all your crank case breathers and hoses. Each intake includes a modular BigMAF housing, which allows the use of a pull through or a blow through MAF setup. See more info about our Blow-Thu Boost Tube on our site and learn how this can be a vital part of your installation. 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.

2" Rotated Up-pipe

Our Rotated turbo kit up-pipe is TIG welded, CNC mandrel bent, 2" 304SS tube with .500" CNC cut flanges. The external waste gate is plumbed into the up-pipe with a smooth transition, from up-pipe to wastegate, allowing for increased exhaust flow and perfect control of all boost levels. The up-pipe is designed to bolt to a factory exhaust manifold or PERRIN headers, and fit a T3 Turbine housing from a Garrett GT30R, GTX30R, GT35R or GTX35R.

3" Downpipe

Our downpipe features a wastegate dump tube to recirculate exhaust gases back into the exhaust system. This eliminates the risk of fire and melting underhood components from high heat rushing from the wastegate. Our competitors don't offer this level of safety and performance, instead choosing to dump those raw gases directly into the engine bay. The PERRIN downpipe dump tube features a slip fit that allows for quick removal of the downpipe. Like our other exhaust components, the downpipe is TIG welded, CNC mandrel bent, 3" 304SS tube with .500" CNC cut flanges. It is also designed to bolt up to your PERRIN or OEM cat-back exhaust.

Choose Your Own Wastegate

The Tuner Kit does not included a wastegate, but its designed around the popular Tial 44mm and Precision Turbo 46mm wastegates. Both of these wastegates are v-band inlet and outlet designs that are 100% interchangeable with our kits. Other V-band style wastegates like the Turbosmart Compgate 45 also fits along with other. Before purchasing, we recommend contacting the manufacture to ensure proper fitment.

5 Year Warranty

PERRIN Performance warrants to the original purchaser that all PERRIN products will be free from defects in material and workmanship within a sixty (60) month period from the date of purchase. *Some exclusions apply
» Read Full Warranty

Off Road Use Only

This product is legal in California only for racing vehicles which may never be used upon a highway. Check your local and federal laws prior to installation.
» Learn More

Warranty Exclusion

We will not warranty any exhaust part that fails or has warped flanges with header wrap installed. We will not warranty any exhaust part that fails or has warped flanges with header wrap installed. While header wrap protects the engine from heat as well as provides some performance benefits, it greatly reduces the life of any stainless steel part. Header wrap greatly increases the rate of corrosion (even stainless steel corrodes), added to that the actual temperature of the metal is much hotter, reducing its lifespan even further. Operation of vehicle without installation of splash guard will void warranty.

We will not warranty any flanges that are warped away from the weld if any aftermarket gaskets are used. Only OEM Subaru gaskets are to be used on this PERRIN Exhaust part, with the exception of downpipes for turbo kits. Subaru provides the proper crush gasket that still becomes flat when tightened (or over tightened) in comparison to aftermarket gaskets which can have a crush ring that is too think causing a hot-spot in the middle of the flange. These will warp the flanges of your PERRIN exhaust, causing a permanent exhaust leak that will not be fixable with a new gasket.


Warranty Details

This product features a 5 year warranty Read Full Warranty

Tech Department


In The Box

Turbo and Wastegate are not included!

In The Box

(1) PERRIN Downpipe
(1) PERRIN Up-pipe
(1) PERRIN Complete Rotated intake
(2) Coolant Hoses
(1) Oil feed line
(1) Oil drain line
(1) PERRIN Boost tube connection
All mounting hardware
(1) PERRIN License Plate Frame

Dyno Charts

Dyno Charts

Dyno Chart

How Does The Spool RPM Compare?

When choosing one of the many turbos that fit our Rotated Tuner kit, it's good to get an idea of how they will respond. This example shows four common turbos that fit our tuner kit, and their spool characteristics found on a 2.5L STI engine. All of these GTX turbos also represent the standard GT turbo response RPM. Check out the below dyno graphs to get an idea of what kind of power you can expect. These are just a few of the many dyno graphs we have, so if there is something you don't see, send us an email!

» Check Out The PERRIN Blog For More Info About The GT vs. GTX Comparo.

Dyno Chart

GTX3076R w/.82ar at 25psi and 28psi

The above graph shows the most popular setup we have. The GT or GTX3076R with a .82ar housing is a perfect blend of response and horsepower. These turbos are capable of making over 480WHP, and making full boost by 4000RPM. This graph shows the GTX3076R w/.82ar exhaust housing running at 1.7bar and 1.9 bar of boost running on water/meth injection and all the normal PERRIN bolt on parts. 480WHP and 480ft-lbs of tq is huge!

» Check Out The PERRIN Blog For More Info About The GT vs. GTX Comparo.

Dyno Chart

GTX3076R vs. GTX3582R w/.82AR at 28psi

The above dyno graph is pulled from our GT vs GTX turbo test, where we did back-to-back testing on all the Garrett Turbos we used to offer. This shows both the GTX3582R and GTX3076R running the same boost, and you can see how the bigger turbo is a trade off for more power, but less turbo response. There are many more comparisons, with different boost levels, housings, and different vehicle models, all found on our Blog page.

» Check Out The PERRIN Blog For More Info About The GT vs. GTX Comparo.

Dyno Chart

PERRIN 07STI GT3076R w/.82 at 20-21psi

This is a dyno graph of our 2007 STI Limited SEMA car that had a GT3076R w.82ar exhaust housing rotated turbo kit installed on it. This car had all of our normal PERRIN bolt on parts, but no PERRIN Header. At 20psi it made a very respectable 380WHP. Just one of many examples we have.

» Check Out The PERRIN Blog For More Info About The GT vs. GTX Comparo.

Dyno Chart

GTX3582R w/.82ar at 25, 28, and 30psi

The GTX3582R is the turbo most people want because it makes the most power. Here is a graph showing this turbo at a few boost levels. On this car, the TGV housings are still in place along with stock cams. With higher redline and better cams, you can get close to 600WHP from this setup.

» Check Out The PERRIN Blog For More Info About The GT vs. GTX Comparo.

Dyno Chart

GT3076R w/.82ar vs .63ar at 28psi

In this example the GT3076R is shown with the smaller .63ar turbine housing compared to the larger .82AR housing. In this example you can see how the smaller housing is more responsive but makes less overall power. The .63ar housing makes for an awesome street car and can still make 400WHP!

» Check Out The PERRIN Blog For More Info About The GT vs. GTX Comparo.

Compatibility Notes


2002-2014 WRX Yes
2004-2018 STI Yes
2015-2018 WRX No
Right-hand drive models No


All Turbo kits can make more power than your engine can handle. We highly recommend having a properly built engine that is able to handle your desired Horsepower levels.
Some 2005 STI models may require minor grinding of transmission casting for clearance. The few effected transmissions have a small 1"x1" casting that sticks out in the middle of where the downpipe passes. If you feel you have one of these models, please call and or email us a picture.
WRX models 2002+ require the purchase of additional Banjo fitting oil line.
5-speed transmission vehicles will also require minor grinding of of transmission casting and a soft bend in the dip stick sleeve for clearance.
Requires PERRIN Front Mounted Intercooler or other compatible Front Mounted Intercooler. Top Mounted Intercoolers will require custom piping to connect it to turbo outlet coupler on intercooler.
Requires VTA type Blow of Valve or use of PERRIN Blow through boost tube.
All models and kits require a proper custom ECU tune, and proper fueling in order to run safely on car.


Shipping Information

  • Item Requires Shipping
  • 42.0 lbs.
  • W15.0000” x H20.0000” x L49.0000”
  • This item ships in its own box.