Originally Posted by Rusty Knutt
not entirely certain, but I believe it goes to the MAF and is an emissions control measure. Is there any reason you are concerned with it, ie. fuel eco, loss of power, throttle response?
Just that if the blowby gases in the valve cover are not released then crud could build up there and in the block as well. Or so I m told.
I read somewhere a long time ago that the case needs negative pressure to best prevent build up
Or ir could be the entire PVC system is just more smog control and no other advantage. IDK
(oh forgot to mention this is a silverdao v8 in a TJ just fyi)