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and a quiet operation at low boost
rear sway bar stiffness affects how the rear axle loads during cornering
Bolt-on performance works with the stock tune
This is a direct replacement for your OEM long-throw unit
offering increased oil capacity
IAG Performance Air Oil Separator AOS - Black - 2008-2014 WRX / 2008-2021 STI / 2005-2009 Legacy GT PDM_gauge-install-adapters and a quiet operation atIAG Air Oil Separator AOS Black 2008 2014 WRX 2008 2021 STI 2005 2009 Legacy GT Keep Oil Out of Your Intake The IAG Air Oil Separator (AOS) provides exceptional engine protection for the 2008 2014 Subaru WRX, 2008 2021 STI, and 2005 2009 Legacy GT. Developed over years of testing on standard and competitive applications, the IAG AOS uses a 1 liter cast aluminum swirl pot canister to dramatically improve oil separation from the PCV system before