This was a great topic to read!!! Just found it and read everything from beginning to end as this is exactly something I am currently looking at doing to my 2015 Sierra 6.2. Yesterday I pulled the TB and was surprised/disappointed at the amount of oil in my manifold.
So I have a thought and I don't believe I saw this previously suggested but if it was then my apologies. Specifically about where to send the "filtered" air after the catch can. It seems there are basically two options. Venting to open, return to intake manifold or sending unfiltered air to the exhaust. So as long as t