Thread: BMW 335i N55 Making Weird Noise At High Boost
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      11-11-2020, 10:41 PM   #3
IllSic_Design
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Drives: 09 E92 335i
Join Date: Jun 2016
Location: Northern California

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Definitely sounds like a boost leak. Check for a coupler/clamp that came off on intercooler or charge piping
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