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Blouch TD06H-20GXT Billet 8cm^2 ( Part Number:BLC TD06H-20GXT8CM^2)

Blouch TD06H-20GXT Billet 8cm^2 - Subaru Models (inc. 2002-2007 WRX / 2004+ STI)

Manufacturer Part # TD06H-20GXT8CM^2


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The Blouch TD06H-20G 8cm2  enhances high boost pressure performance by substituting the larger TD06H high flow turbine for the TD05H turbine to reduce exhaust manifold/turbine housing backpressure while maintaining good throttle response.

While full ball bearing performance turbochargers have their place, we realize they are not for everyone - hence the new 20G-XT. These new 20G-XT compressor wheels really are a work of art: stronger yet lighter closed die forged aluminum alloy combined with state-of-the-art 5-axis CNC machining allows for tweaking the aero for even greater mass flow and efficiency from a given geometry.

This a great turbocharger with all the right ingredients that produces greater peak torque and peak horsepower when compared to the "old" 20G at the same boost pressure.

This turbocharger will come with both coolant and oil drain pipes, as well as a new up pipe, and downpipe gasket to make it ready for the installation. 


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Brand: Blouch
Bearing Type: Journal Bearing
Cartridge: Mitsubishi
Exhaust Housing Size: 8cm
Fitment: OEM
Gaskets Included: Yes
Inlet Size: OEM
Oil Line Included: No
Ported Turbine Housing: Yes
Rated Horsepower: 470hp
Scroll: Single
Wastegate: Internal

Mfgr. Warranty: 6 months / 6,000 miles
Condition: New Product
Return Policy:

RallySport Guarantee - 30 Days

Items that are covered under the RallySport Guarantee offer a 30 day no questions asked return policy.

RallySport Guarantee items may be returned within 30 days of the original invoice date and must include all the original parts and contents for a refund.

The RallySport Guarantee does not apply to products that have been modified, damaged, misused or abused. All returns require an RMA (Return Merchandise Authorization) Number, and freight charges are strictly non-refundable. For more information regarding our freight refund policy, please refer to our return policy page found HERE.



Verified Purchase

Awesome turbo
Deathryuu 2 years ago
My car is a pretty similar setup to the review below mine, very similar power levels as well, and I am just as happy with it! 07 Subaru Impreza WRX TR - Power mods: Stock motor and 5 speed - Cobb AccessPort V3 - Blouch TD06H 20G-XT 8cm w/ oil feed line - Tial 44mm EWG - GrimmSpeed up pipe w/ EWG port - GrimmSpeed divorced catted downpipe - Blitz NUR Spec R catback - 06 STi TMIC - Cobb adjustable WG bracket - Cobb EBCS w/ 1/4" EWG boost line kit - Cobb SF intake and airbox - Cobb 1000cc injectors -Walbro 342 pump - This turbo absolutely loves to make power in the mid to top end on the 2.5L, without sacrificing too much spool up. It made 340 WHP and 330 WTQ at 18 psi on the Mustang dyno at Cobb Surgeline. We capped it at those levels to maintain some reliability out of the stock motor and transmission, but you could absolutely tell that the turbo is only beginning to get into its sweet spot at 18 psi(many people run these at 22-25 psi on E85 or meth injection and reach 400+ WHP). Chris at Cobb Surgeline turned the car and really provided a beautiful, smooth out the power band! Once it reaches full boost at around 4200 RPM, she screams all the way to 7000 RPM without missing a single beat. 70 MPH in 3rd gear now feels like 2nd gear did(stage 2) at about 30 MPH(except it holds that thrust until redline and beyond instead of falling off). Driveability around town, while not having the low end slam-into-full-boost feeling that the TD04 had, is now very smooth and feels like an N/A engine with low boost(under 10 psi). With these bigger turbos, you don't need as much boost to make the same power as a smaller turbo. My one and only issue with this turbo is that the compressor outlet is not "offset" enough and ends causing the turbo-to-IC hose to interfere with the throttle by wire connector on 06+ WRX, causing the connector for the throttle to push into the intake hose. I was able fix this for the most part by grinding a good amount of the corner off of the connector and then patch it up with sillicone to keep the wiring safe.

Verified Purchase

350whp on 06WRX Wagon
cade8537 3 years ago
Long story short i installed this on my 06 WRX wagon when my stock turbo went out. After install had it tuned by Fastech Motorsports in east TN and WOW. Overall I am very satisfied by this turbo! Boost comes on late as expected but when it finally starts to boooooost its like a rocket ship! Made 342awhp on this turbo and had room to go higher! My specs: -Blouch TD06 20GXT Turbo -Catless Invidia Downpipe -Blitz Nur Spec R Cat back -TGV Deletes -Air Pump Delete -Walbro 255 Fuel Pump -Injector Dynamics 1000cc Injectors -Perrin FMIC + Perrin Short RAM intake + Perrin Turbo Inlet Hose -Stock BOV -Stock Upipe
Verified Purchase

Super smooth all the way to 7300 RPM!
charbawk69 5 years ago
Unreal turbo, safe tune and only 18psi boost and hit 340whp on 91 octane. Boost never tapered down which was odd but nice to have. The rubber hose on it did split though and turbo has only been on my car for 500km's. :( Next mods-FMIC, meth.

Love this turbo
ebay98403 6 years ago
I am totally happy with my 20G-XT. I did find that it spooled slightly later than my VF39 stock turbo. We then did TGV deletes and made a huge difference on spool. Followed up later with Killer B equal length headers and WOW! spools better than stock and has tons more mid and top end hp!
Verified Purchase

Great turbo - Unusual Fitment on my Car
david240z80734 7 years ago
Love the turbo so far, spools up slightly slower than VF39 but has amazing mid to high power range all the way to redline. On my car there was an issue where part of the actual housing on the cold side had to be slightly ground down to fit, but maybe it was a fluke. Its all good now and I highly recommend getting a stainless braided oil line... functions great and looks pretty =)

  • Q: Oil line  Jesse 10 months ago


    Can I use stock 2006 sti oil line with this turbo?

    • A: No you will need the Blouch Oil line.

      Tyler A. 10 months ago
  • Q: 2013 sti  mr_wasteland 1 year ago


    Hello, I have a 2013 sti with AEM CAI, Cobb catted down pipe, & 3" Invidia exhaust. Stock intercooler, stock injectors, stock fuel pump. What additional supporting mods other than a pro tune will I need to run this turbo? Thank you in advance.

    • A: It is recommended that you upgrade your injectors, fuel pump, intercooler, and turbo inlet.

      Jared A. 1 year ago
  • Q: 2005 STI turbo upgrade.   Mitch "SloWhite" Lee 2 years ago


    Currently my stock turbo has warped on the hot side and need a new turbo. Does this turbo fit on the 2005 STI and is it a viable option for a good upgrade?

    • A: This will be a direct fit for your car. You will need a custom tune however.

      Josh P. 2 years ago
  • Q: color and fitment   twrx6450289 2 years ago


    Will this 20gxt come in black and will it fit with a large TMIC? I have the Blouch 16gxt and that fits fine.

    • A: Yes, this will arrive with the black housing. You should have no issues fitting this with a large TMIC.

      Josh P. 2 years ago
  • Q: what does it come with?  twrx6450289 2 years ago


    Does it come with: 3" Inlet Compressor Housing and Coated Turbine Housing? And is the hot side ported?

    • A: The uppipe to turbo and turbo to downpipe gaskets are included. This is the standard sized compressor inlet option and none-coated exhaust housing. The 3" and coated options are available as different part numbers on our site.

      Nick S. 2 years ago
    • A: But it does come in black correct?

      twrx6450289 2 years ago