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Also, I may add, if you put a catch can on the line you have pictured, that line is not a one-way line. It is used to pull oil vapor out of the valve cover, but also used to supply fresh air TO the valvecover when there is a vacuum present.
The LTG PCV/fresh air system is quite complex, comprises 4 valves, 3 valve cover connections that are external and a set of internal connections along with a connection on the turbo as well as a connection on the intake to the turbo.
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