yes but not the answers i need...like this is a good example or a conventional pcv system: id imagine the hose closest to the filter in the diagram on a starlet is were the recirc bov is...but when people have been plumbing in a oil catch tank to vent 2 atmosphere they have been plumbing this line into the tank!! the way in which you put the fumes back into the inlet mani you put a filter on this part of the rocker cover. but i want to vent 2 atmosphere though...and do it proplerly. you c my what i mean?? does it matter if you dont get clean air into the system?? can you just use this port on the rocker as another way to vent out fumes?? is it possible to properly plumb in a catch tank to vent 2 atmosphere?? i dont mean 2 sound like im havin a whinge and soz its in the wrong section i just thought it was relevent to the conversation