S54 Updated PCV Production date?

[BigRussia]

I had one on my 6/04 6MT, just went with the older style air rail purely for esthetics after my CSL tune.

Awesome thanks for that info!

Is there a concensus on what the new design accomplished over the old design?


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Ive been curious about this too, and never found anything about why it was changed and what it accomplished. I figured it was for tighter emission regulations but curious to the actual workings of what the updated design did.