Oil Catch Can. Yes or No?

[Dgc333]

Ok trying to rap my head around this and understand the concept. Are the check valves an add on to the UPR duel catch can or does it come with it? And where are they added.

The check valves and all the hoses come with the dual valve catch can. UPR also sells a conventional setup that just goes in series between the PCV valve and the intake manifold.

The dual valve setup has a check valve in the line between the catch can and the intake manifold. This valve is open when you are off boost drawing fumes from the crank case through the can to the intake manifold. When you go into boost this check valve closes preventing boost pressure from entering the crankcase. There is another line that goes from the catch can to the low pressure point just Infront of the turbo inlet. This line has a check valve that is closed off boost but opens when you have boost. So that low pressure source at the inlet to the turbo draws the oily fumes from the crankcase through the catch can to the front of the turbo.

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[Racket]

I'm starting to wonder if getting the water and other crud out of the EGR line will extend the life of sensors in the system not just the intake valves.