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Discussion Starter · #3 ·
What's inside black module besides PCV valve, description of how it's suppose to function under vacuum and boost. I could pay for subscription to tech authority and get pissed if info wasn't there.
 

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Erm, well, it's acts just like any air-oil separator. It's a combination unit with PCV, right? It's not really affected by boost or vacuum, it's affected by the pressure build up in the crankcase via blow-by.
 
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