Blouch Dominator 2.5XT-R 8cm^2 Turbo 2002-2007 WRX / 2004-2021 STI
Investing in a larger turbo as well as supporting mods is one of the best power upgrades you could buy. Blouch is the leader in turbo development; they consistently build the best turbos. The new XT-R line of turbos from Blouch consists of a billet compressor wheel to optimize the aerodynamics of a turbo and increase compressor flow within the same inducer geometry.
All of this combined with Garrett GT turbine and full ball bearing technology to produce a complete bolt-on package that includes stainless steel turbo oil feed line and steel oil drain tube and coolant lines. Adjustable upgrade actuator is standard issue on the XT-R "Polka Pickle" and is pre-calibrated to operate at 15 PSI.