Ok I'm probably beating a dead horse here but in any case:
- I did not mean to imply that the V3.3
is sold with different sets of instructions but rather that during the V3.3 lifecycle there have been at least two different sets (i.e, versions) of instructions...and now there appears to be a third version--more about that in a moment. I was merely trying to understand how OP did not realize what the check valves were for.
This one (which BTW was the one I saw on the K5OS site back in 2018 when I was first researching OCCs):
"Old" V3.3 install diagram
And this one which was in the V3.3 kit I purchased back in December 2019:
Newer V3.3 install diagram
And now if what Thefreshbatch said in post #10 is indeed accurate ("The set of instructions i received in the package was
two sided..."), then apparently there is now a third revision of the V3.3 install diagram, as the one that was included in the kit I purchased (the "Newer V3.3 install diagram") is
one-sided.
Just so that we're on the same page--I NEVER stated that the V3.3 comes with more than one set of instructions/diagrams, only that there have been at least two (and now three) different versions of instructions.
And if I really wanted to get on ADD's case when it comes to the V3.3 OCC--why the radical change in installation from the "Old" instructions which show the hose that goes to the intake manifold being plugged and a connection between OCC and valve cover breather port, to the "New" instructions which now incorporate two check valves and now it's the valve cover breather port that is "capped" with a breather filter? If I were an ADD V3.3 owner who installed it under the "Old" instructions--i.e., before the "new" V3.3 kit with the check valves became available, I'd be asking the same question as well...