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I know this has been talked about a lot, but I haven't seen anything like this in all my searching and after doing an exhaust manifold install (and seeing my intake gummed up with residue) I've been putting a lot of thought into it.
There are currently two big options out there for catch can setups, both have advantages and disadvantages that I've found:
1) VTA - Great for high power applications due to a lot more flow potential and no residue recirculation. Bad for smell (not something I'm personally concerned with), bad for lack of vacuum.
2) Recirc systems (radium dual catch can, etc) - Closed system, good for retaining at least some vacuum characteristics. Bad for lack of flow under boost.
I really want a way to retain some vacuum operation and it's been a boring day, so I've dreamed up an idea
The concept is simple:
Have both valve cover ports go to one catch can.
Have a reversed PCV going to a breather (PCV 2 - gets pushed open when the catch can is pressurized and closed when the catch can is under vacuum).
Have a PCV going to the intake (PCV 1 - gets pulled open when under vacuum and pushed closed when intake is under boost).
Thoughts?
I haven't experimented with PCV valves to know how much force it takes to actuate them, but I'd be looking for just the lowest resistance possible with a setup like this.