What is this part?
 

http://forums.pelicanparts.com/uploa...1510186240.jpg

Chasing an idle issue on my newly acquired 928 S4. This part is located on the cam cover and there is two of them. On all cars it should be a pcv (one way check valve to intake) If I blow into mine(into cam cover), the one closest to the firewall has some restriction but air goes through eventually and the other one air goes through without restriction. I'm confused since there is hardly any info on this part and nobody sells it.

Nope. No PCV valve on these at all. Just venting.

Thanks