I did a search & there is just too much stuff to sort thru, and not a direct answer if this work well.
Im just curious to see how many of you have ran a PCV setup by tapping the valve cover & not the block (B20/vtec). For a vacuum source i was gunna run it to the exhaust...If i remember right, is there a certain angle that i must weld the fitting into the exhaust to get a good vacuum??
And is running the pvc thru the valve cover efficent enough? Any one got pics of this setup?

 

my friend did it on his b20/vtec - here is a pic