Thread: DIY: Understanding the N55 PCV Valve of Doom
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      06-11-2017, 12:26 PM   #12
remixsecret
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Drives: 2009 335i
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Originally Posted by AJ9x View Post
http://www.e90post.com/forums/showthread.php?t=1384967

Here's a thread on said hack job. Finished it and it's working fine.
I did this hacked job with the PCV valve replacement part off vanos website. Squeal is still there but less now, but else could be the issue to fully get rid of the howling sound?
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