Turbosmart BOV RacePort - Red - Gen V subaru-crosstrek-2017 The main difference is that

The main difference is that an AOS system returns what is collected back into the oil pan so there is no servicing required

- Reduces Firewall Flex

capable of very high flow rates

ETS Intake and Airbox:

1992 Ford Taurus SHO

Turbosmart BOV RacePort - Red - Gen V subaru-crosstrek-2017 The main difference is thatThe Turbosmart RacePort is famous for being an amazingly small and light BOV for turbocharged competition level engines. Featuring our unique collar design and internal flow structures, it is 50% lighter and 25% smaller than the competition while flowing 330 CFM making it the highest flowing BOV of its type on the market. The Highest flowing BOV in the Turbosmart range has just been redesigned and now features our unique collar design. 5 User