Blouch TD06H-20GXT Billet 8cm^2 Subaru Models (inc. 2002-2007 WRX / 2004-2015 STI)
The WRX/STi TD06H-20G 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.
But they are not all looksies - they really perform: the 20G-XT produces greater peak torque and peak horsepower when compared to the "old" 20G at the same boost pressure! Now that truly is bolt-on performance!