Blouch TDO5H-20G XT

Blouch TDO5H-20G XT


The Blouch 20G-XT produces greater peak torque and peak horsepower when compared to the “old” 20G at the same boost pressure!
All Turbos are built to order and may have a 2-3 week lead time. Contact us to get the most up to date lead times.




Blouch Performance Turbo was founded by Robert Blouch Sr. in February 1980. His son, Bob Jr., joined the business in 1990 and spearheaded the development of bolt-on upgrade turbos for the emerging four cylinder sport compact market.

Today, Blouch Performance Turbo offers a complete line-up of custom performance bolt-on upgrades for popular vehicles such as the Subaru WRX/STi , Mitsubishi EVO VIII, IX and X, Porsche 996 and 997, Mitsubishi 3000GT, and Dodge SRT4 and Caliber. The components used in these upgrades are state-of-the art such as fully machined billet compressors with advanced aero, custom turbine wheel and shaft assemblies, and custom compressor and turbine housing castings that are machined in-house on their own CNC equipment.

Quick Specs

  • Capable of 470HP
  • Custom Blouch Turbo Compressor Housing CNC Machined, at Blouch, to Match the new 20G-XT Aero
  • Closed Die Forged Fully Machined Billet 20G-XT Compressor Wheel
  • Compressor Wheel is Lighter yet Stronger with Greater Flow Rate
  • Water Cooled Journal Bearing Center Housing
  • Custom High Flow Low Inertia TDO5H Turbine Wheel
  • Multiple Turbine Housing Choices: 7cm2, 8cm2, or 10cm
  • Optional 3″ Bell Mouth Inlet Compressor Housing
  • 15psi Wastegate Actuator
  • Gaskets and Drain Tube/ Coolant Lines Included

JMA Turbine Housing Tips:

A smaller turbine housing will spool quicker but have less top end power. 

A larger turbine housing will spool slower but have more top end power. 


Direct Fitment

  • 2002-2007 WRX
  • 2004-2021 STI
  • 2005-2008 FXT

May fit with Grimmspeed STI Style Turbo Outlet Hose and Upgraded Intercoolers

  • 2008-2014 WRX
  • 2009-2013
  • 2005-2009 LGT/OBXT


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