JSC Speed.com | Contact JSC         Login | Create Account
free ground shipping on most orders over $199

02-07 Subaru WRX & STI ATP Bolt-On Garrett Turbos

ATP's range of bolt-on Garret turbos are designed to provide the performance of a dual ball-bearing turbocharger with the convenience of a stock-location turbo. The ATP WRX & STI turbos easily install in place of the stock journal bearing turbo, due to the high-flowing GT-inspired ATP WRX & STI exhaust housing and a series of custom engineered components built to suit the installation.

Every ATP WRX & STI GT drop-in turbo consists of a Garrett factory assembled and high speed balanced dual ball bearing CHRA which is then assembled into a set of CNC machine ported housings that have been optimized in every aspect for maximum flow and efficiency and designed to attach to the WRX & STI uppipe. The turbo includes all the necessary oil & coolant supply hardware to seamlessly attach the turbo to your WRX or STI.

ATP's focus with these turbos isn't peak power numbers; they're designed to make more torque under the curve and give you more accessible power.

ATP recommends that you use a bellmouth downpipe with their bolt-on Garret WRX & STI turbos for optimal performance. Stock-type flat plate WRX & STI downpipes (HKS, DC Sports, etc.) and divorced wastegate downpipes (Perrin, Invidia Divorced) do not allow enough clearance for ATP's custom wide-swinging wastegate door. This can result in boost "creep," "spiking," and inaccurate boost control. The Turbo XS & Invidia Bellmouth downpipes would be good choices for use with this turbo.

In addition, ATP reccomends a higher flowing 3" turbo inlet, like the Perrin, Agency Power or APS. If you must use a stock-sized inlet, you will need to source a 2.4" to 3" reduction coupler, as the ATP turbos have a 3" inlet.We recommend using a matching-sized 3" inlet for minimal restriction, since GT turbos thrive with minimal inlet obstruction. ATP's tests have shown that these turbos, when used with the stock sized 2.4" inlet, produce significantly less power than when used with the 3" inlet. When coupled with a 3" downpipe, the 3" inlet promotes faster spool, and higher power numbers with less pressure at the manifold.

 

 GTX-R Turbochargers now available!

Standard turbocharger companies use billet wheels that are designed identical as there cast counter parts, making the wheel lighter and a bit more efficient at certain boost levels. The GTX billet wheel gives a 10% increase in air flow over the standard wheel design greatly increasing the turbochargers efficiency which leads to more power (throught the power band)! The 5 axis CNC cut 1-piece forged billet wheel is a great way to get better performance without giving up a quick spool.


  • Notes:
  • Fuel system modifications & ECU tuning a required with these and any other aftermarket turbos.
  • ATP recommends a 3" bell-mouth downpipe due to the increased wastegate flapper travel.
  • While these turbos will work with a stock-sized inlet and 3" adapter (not included), ATP recommends a 3" inlet to achieve advertised power numbers.
GT2860RS

The smallest of the ATP bolt-on WRX & STI turbos, the GT2860RS AKA "GT28RS," is good for small engines, like the 2.0L EJ20, where fast spool is a priority. The GT28RS uses a 53.85mm turbine wheel with a 76 trim and 60mm, 62 trim compressor wheel to provide good spool characteristics and a nice power upgrade.


  • FITMENT:
  • Subaru STI 2004-2007
  • Subaru WRX 2002-2007
Description Part # MSRP Price Inventory  
GT2860RS Internally Gated ATP-SUB-003 $2,118.75 $1,949.25 Usually ships in 2-4 weeks
GT2871R

Bigger than the GT28RS, ATP's GT2871R has slower spool, but can handle around 400 horsepower. This is a good turbo for built-engine 2.0L WRXs that don't mind adding some lag for some more top-end performance. This turbo is still pretty small for a 2.5L, but will have rapid spool if you decide to go that route. The GT2871R uses a 53.85mm 76 trim turbine wheel and 71mm, 56 trim compressor wheel.


  • FITMENT:
  • Subaru STI 2004-2007
  • Subaru WRX 2002-2007
Description Part # MSRP Price Inventory  
GT2871R Internally Gated ATP-SUB-004 $2,181.25 $2,006.75 Usually ships in 2-4 weeks
GT3071R

ATP's GT3071R is a great match for the 06+ WRX & 04-09 STI's 2.5L engine, especially if you're looking for boost threshold that is close to stock but want enough airflow for 450+ hp. Almost all the boost is available all the time; even at part to medium throttle!. Boost recovery between gearshifts is awesome with full boost ready even before upshift is complete as the STI lurches forward with shear enthusiasm at the onset of each gear. If you have a built 2.0L and are shooting for 450+ hp, this turbo will work, although it will have significant lag. The modern generation of Garrett wheels, coupled with an awesome wheel ratio, allows even the smaller displacement EJ20 engine to provide adequate motivation to get the GT3071R going for a great powerband. The 3071R competition-grade turbo still offers the best response and spooltime out of any unit in this flow range. The GT3071R uses a 60mm 84tim turbine wheel and 71mm 56 trim compressor wheel.


  • FITMENT:
  • Subaru STI 2004-2007
  • Subaru WRX 2002-2007
Description Part # MSRP Price Inventory  
GT3071R Internally Gated ATP-SUB-001 $2,368.75 $2,179.25 Usually ships in 2-4 weeks
GTX3071R Internally Gated ATP-SUB-020 $2,743.75 $2,524.25 Usually ships in 2-4 weeks
GT3076R

ATP describes the GT3076R as "the right tool to do 500+ HP job." This turbo can support 500+ horsepower on the 2.5L. While the 3076R has a little more lag than the smaller units (it makes boost about 400RPMs later than the GT3071R), but it makes more top-end power. We do not recommend this turbo for 2.0L cars, unless they are full-race, built-block applications with head work. ATP's WRX & STI GT3076R is the modern "GT30R" and not the incorrectly named -10, -11, -12, -13, -14 series from the old days misused and abused as "GT30's". If you're looking for a 500hp turbo for your WRX or STi that is streetable, and has a decent powerband, look no further. The GT3076R has a 60mm turbine wheel with an 84 trim and 76.2mm, 56 trim compressor wheel.


  • FITMENT:
  • Subaru STI 2004-2007
  • Subaru WRX 2002-2007
Description Part # MSRP Price Inventory  
GT3076R Internally Gated ATP-SUB-002 $2,368.75 $2,179.25 Usually ships in 2-4 weeks
GTX3076R Internally Gated ATP-SUB-021 $2,743.75 $2,524.25 Usually ships in 2-4 weeks
GT3582R

If you are looking for big power and fast spool - this is the one. This turbo can support 600+ horsepower on the 2.5L. (approximately 450whp on a 2.5L) Stepping up to this turbo puts you in a class above the rest. You will have slightly slower spool than the GT3076, but massive power up top. We do not recommend this turbo for 2.0L cars, unless they are full-race, built-block applications with head work. ATP's WRX & STI GT3582R is the modern "GT35R" and not the incorrectly named -10, -11, -12, -13, -14 series from the old days misused and abused as "GT35's". This is a true stock location bolt on turbo. The GT3582R has a 68mm turbine wheel with an 84 trim and 82mm, 56 trim compressor wheel.


  • FITMENT:
  • Subaru STI 2004-2007
  • Subaru WRX 2002-2007
Description Part # MSRP Price Inventory  
GT3582R Internally Gated ATP-SUB-005 $2,493.75 $2,294.25 Usually ships in 2-4 weeks
ATP External Wastegate Garrett Turbos

ATP has taken their revolutionary bolt on Subaru turbochargers to the next level by offering a direct fitment external wastegate. The exhaust housing is cast with a flange designed for a Tial 44mm wastegate, while the internal wastagate is eliminated permanently. This setup allows you perfect boost control, and will prevent any boost spiking issues commonly associated with a smaller internal wastegate.


  • Notes:
  • Fuel system modifications & ECU tuning a required with these and any other aftermarket turbos.
  • While these turbos will work with a stock-sized inlet, ATP recommends a 3" inlet.
  • Dumptube and Tial 44mm wastegate are sold separately!
  • FITMENT:
  • Subaru STI 2004-2007
  • Subaru WRX 2002-2007
Description Part # MSRP Price Inventory  
GT3071 flanged for V-Band 44mm Wastegate ATP-SUB-007 $2,368.75 $2,179.25 Usually ships in 2-4 weeks
GTX3071 flanged for V-Band 44mm Wastegate ATP-SUB-025 $2,743.75 $2,524.25 Usually ships in 2-4 weeks
GT3076 flanged for V-Band 44mm Wastegate ATP-SUB-006 $2,368.75 $2,179.25 Usually ships in 2-4 weeks
GTX3076 flanged for V-Band 44mm Wastegate ATP-SUB-026 $2,743.75 $2,524.25 Usually ships in 2-4 weeks
GT3582 flanged for V-Band 44mm Wastegate ATP-SUB-008 $2,493.75 $2,294.25 Usually ships in 2-4 weeks
44mm Dump Tube ATP-SUB-009 $86.25 $79.35 Usually ships in 2-4 weeks
Mon-Fri 8am-8pm
© 2014 JSC Speed Inc.  All Rights Reserved.
510 Hyde Park, Doylestown, PA 18902
Tel: 215.489.2820  Fax: 215.489.2826
Hours:
Mon-Fri 8am-8pm

©2014 JSC Speed Inc.
All Rights Reserved.

510 Hyde Park
Doylestown, PA
18902

Tel: 215.489.2820
Fax: 215.489.2826