The 20-0105 PCV Catch Can Kit (shown below) is compatible with all 2008-2016 EVO X models. It installs immediately behind the RH headlight and plumbs in-line with the PCV hose. When the intake manifold pressure is close to or greater than atmospheric pressure, the PCV "check" valve closes and, thus, this hose experiences no flow. 

Conversely, the PCV hose will experience "metered" vacuum when the engine is idling, steady state cruising, and decelerating. This would normally draw unwanted crankcase vapour, unspent fuel, and oil sludge into the intake manifold immediately after a high load run.

Note: Because Radium catch cans are pressure sealed, they are great for boosted applications as well so connecting to the intake manifold is permitted and will withstand any boost level.

The PCV kit shown above is a closed system that requires a vacuum signal from the intake manifold to open the PCV valve.