Perrin - Subaru 08-14 WRX/STI - Air Oil Separator (Neon Yellow) subaru-ascent-2020 most flexible ECU upgrade solution

most flexible ECU upgrade solution coupled with COBB's SF Intake System makes up the COBB Stage 1+ Power Package for your Subaru Legacy or Outback

This tube upgrade is a direct replacement for the factory "accordion style" intake tube and bolts right up to the OE air intake system

black hose fittings

and add horsepower with the Tomei Expreme Titanium Cat-Back Exhaust System

Perrin - Subaru 08-14 WRX/STI - Air Oil Separator (Neon Yellow) subaru-ascent-2020 most flexible ECU upgrade solutionOVERVIEW The PERRIN Air Oil Separator traps oil from the crankcase vents before it enters the intake, reduces carbon build up, increases intercooler efficiency, which reduces the chance of performance robbing detonation. NO TUNING REQUIRED Increase horsepower and torque without ECU recalibration or tune! This part is designed and tested to work safely on your vehicle without any tuning required! However, more power can be gained with proper ECU