I did a search on vacuum leaks to try to figure out what is going on with my car. Anyway, I read a lot about the PCV system. I removed my PCV (round 3" diameter valve above the N75 valve) and it had a lot of oily water in it. I guess my question is, what does a properly functioning PCV do? I noticed a spring in there but it really doesn't do anything. I expected to see a diaphram like the DV has, but there was nothing. Am I missing something? I am hoping this is the source of my boost problems.