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Re: Quick Oil Catch-Can question
Brownman, think about it, at idle the IM is a vacuum source. It is what is drawing the air out at idle.
Under boost, the IM is no longer a vacuum source, it's under pressure. Your PCV (basically a check valve), stops the pressure from going backwards. And now your vacuum source becomes your inlet pipe.
You need those 2 different vacuum sources because like Chris said, the vacuum source under one engine condition, can become a pressure source under a different engine condition.
Chris I just did some quick thinking about what you were saying with a 3 port catch can. Quick thinking about it, I think it'd work.
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