Cobb Tuning Air Oil Separator (AOS)Ford Focus RS LZ 16-17 Subaru-BRZ-2015 System includes flow plate to

System includes flow plate to eliminate check engine light that may be caused by the increase of airflow of the BORLA® system

Compatible with 2nd generation B58TU engines only (B58B30O1/B58B30M1)

Deadtime is the delay between when exhaust gas composition changes and when that change is reported by the O2 sensor

2014 Volkswagen Jetta SEL 2010-2014 Volkswagen Jetta TDI 2010 Volkswagen Jetta TDI Cup Edition 2012-2014 Volkswagen Jetta TDI Premium 2010 Volkswagen Jetta Wolfsburg Edition

Cobb Tuning Air Oil Separator (AOS)Ford Focus RS LZ 16-17 Subaru-BRZ-2015 System includes flow plate toDESCRIPTION The COBB Air Oil Separator is placed within your Ford RS's crankcase ventilation system and helps to prevent oil vapors from being introduced into the intake system. The COBB Air Oil Separator is of our own design and has been in the works for years, making tweaks and updates to ensure that it is a seamless installation, clears any third party emissions, an is the perfect upgrade to your engine. Ford's EcoBoost engine doesn't have a great