Cobb Air Oil Separator Subaru WRX 2008-2014 / STI 2008-2021 / Legacy GT 2005-2009 | 822615 Wheel Bolt Pattern_4x108 The TurboXS High Performance boost

The TurboXS High Performance boost controller uses a ball & spring/bleed valve hybrid design to more accurately dial in peak boost and reduce turbo lag than the standard version

KSP-CSB030-GR

High-resolution MAC electronic boost control solenoid included

For WRXs with basic bolt-on modifications

or driving in hot climates

Cobb Air Oil Separator Subaru WRX 2008-2014 / STI 2008-2021 / Legacy GT 2005-2009 | 822615 Wheel Bolt Pattern_4x108 The TurboXS High Performance boostFitment Information: 2008 2014 Subaru WRX 2008 2021 Subaru STI 2005 2009 Subaru Legacy GT 2005 2009 Subaru Outback XT 2009 2013 Subaru Forester XT The COBB Subaru Air Oil Separator helps to prevent crankcase oil vapors from recirculating back through your engine's intake system. Oil vapors passing through your engine's intake system lower the effective octane rating of fuel and can contribute to both oil and carbon buildup over time. Features: 1 Liter