DOS Performance 100 Turbo - 2002-2007 Subaru WRX / 2004-2021 Subaru STI / 2004-2008 Subaru Forester XT Honda-Civic-Type-R-2018 Improved internal flow path increases

Improved internal flow path increases output by 5% without sacrificing low flow performance

Have the stock downpipe but planning to go aftermarket later

giving the platform a more defined and predictable cornering balance

They are not a substitute for lowering springs -- they adjust height within the range of the current spring setup rather than changing spring rate or significant ride height

DOS Performance 100 Turbo - 2002-2007 Subaru WRX / 2004-2021 Subaru STI / 2004-2008 Subaru Forester XT Honda-Civic-Type-R-2018 Improved internal flow path increases1,000 Crank HP from a Stock Location. That is Not a Typo. The DOS Performance 100 Turbo is the most capable stock location turbo built for the EJ platform, full stop. Rated to flow 100 lbs per minute and support 1,000 crank hp or 800 wheel hp, the DOS 100 pushes into power territory that most Subaru owners assumed required a full rotated setup. It was co developed with Blouch Performance Turbo using the same engineering principles behind the DOS 70