CorkSport Oil Catch Can Installed

After some research on carbon build-up issues in the intake manifold and intake ports/valves on the head of direct injection engines, I decided to install a catch can to eliminate as much of the recirculated crud that ends up collecting in the two mentioned areas. So, over the holiday weekend I took a couple of days to install the CS catch can on my 2020 CX30. The kit didn't need a couple of days to install, just took me that long as the car wasn't needed and I worked it in amongst other activities. I followed the online CS install instructions except, I did not remove the front bumper cover as I didn't see the benefit for the pain.

It is an easy install except for getting the hose clamp in place on the catch can hose to pcv connection, it is a PITA to access and to get the correct tool combination to tighten the clamp. I removed the air box, the entire front under body panels, the triangular shaped panel in front of the left front tire and the starter. There are a couple of pre-installed/unused nuts on a inner fender bracket that the catch can bracket bolts to (easily accessible without removing the bumper cover).

With the air box removed, I opened the throttle blade to find a considerable amount (to me) of carbon on the manifold side of the throttle body. To start with, and likely at each future oil change I will spray a can of GDI intake valve cleaner through the throttle body. I will be researching a cost effective way of putting together a system to walnut shell blast the intake valves/chambers at a yet to be determined interval. I want to see if I can easily get my bore scope into the manifold and check a cylinder or two for the extent of the carbon build-up. To do a walnut shell blast, the manifold would need to be removed. I hope to find a service manual procedure detailing the process and any relevant torque specs.