PCV System Diagram Based Largely on MM's
The booster will retain it's stock check valve and should function like like stock. I'm only adding in the second valve to block boost from going to the catch can.
I wanted the check valve in between the turbo and the catch can because under idle and low load, I was afraid the manifold vacuum would be much greater than the turbo inlet vacuum, possibly drawing air IN from the turbo inlet.
PVC Spring-Loaded Ball Check Valves
Maximum Pressure: 125 psi @ 140° F
Cracking Pressure: 1 psi
Temperature Range: 33° to 140° F
With a wide variety of end connections available, you're sure to find a valve that will fit in your piping system. All are made of corrosion-resistant PVC with a Type 302 stainless steel spring, Type 316 stainless steel ball, and a Buna-N seat. Color is gray. Note: Cv factor not rated. Connections: NPT, barb, or push-to-connect (see table).
They make one that has barbed ends for hoses in different sizes for $12 each. Didn't seem bad to me.
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Here's a diagram that I'm working on today... basically the same idea. I included the vac, PCV and boost controller stuff too, just for my own sanity.

Thoughts?






