If running K&N breather in valve cover --- Do you need to run a Pcv valve ????

I would! could cause premature gasket failure,valve cover gaskets,oil pan gasket,rear main seal, lower intake end seals..

If he has a breather in each valve cover, how do you explain building up with enough pressure to blow gaskets then?

8-4.446 holes vs 2- 5/8 holes or the way it reads he may only have one breather.. do the math.. and if thats the case then why does mercury have pcv hooked up on their motors then.

I hate working on oily engines.

I think using a puke tank may be the way to go anyways, especially if there is no room for pop in breathers. I'm in research mode on the puke tanks myself.

I think the hot set up would be a moroso scavenger system but in a smaller form with a puke tank..free horse power

I think puke tanks would be the way to go. I never could understand why you suck oil vapor out of the engine and dump it back down the carb, Mpi or intake. Seems like it would just gum it up