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      11-21-2012, 02:31 AM   #2
Dr. G
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Drives: Black e92 335i
Join Date: Apr 2010
Location: Brampton, Ontario

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e92 BMW 335i  [4.42]
Originally Posted by surendrant View Post
So I picked up an ER chargepipe from N54tuning. Mike really lives up to his reputation of amazing customer service.

Anyway, I took my HKS BOV off the UR chargepipe it was initially on. Reused the retainer clip and O ring to install it on the ER chargepipe. Everything works fine except the fact that the BOV can rotate freely without much force. It was tight solid on the UR chargepipe. I already talked to Mike and he suspects a fake BOV or a bad retainer clip. Any other ideas on what it could be? Car is running fine and its holding boost all the way to 15.8psi. Im just not sure if air may be escaping from the BOV. Any advice would be greatly appreciated. Thanks in advance!
This seems to be the case with all ER chargepipes in my experience. The UR was a tighter fit and diff material so it was a lot harder to spin. With the ER you have a bit more room, but the O-ring should be compressed enough that it still forms a seal. After a bit of driving it will seal up better as well and become slightly harder to spin around.
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