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      11-04-2013, 03:51 PM   #1
Prissy
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Question Does this happen to you guys when cold start?

I have a 335i coupe and whenever I cold start the car, my driver side exhaust would make a metallic rattling noise for half a sec to a second. Is this normal??

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      11-04-2013, 10:42 PM   #2
mou11002
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Can you record the noise? I had the same issue, and it ended up being the muffler. Dealer replaced it.
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      11-04-2013, 10:44 PM   #3
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I've seen many thread on this... as far as I know yes. Mine does it, I have the flap disconnected via the plug in the trunk. I don't remember if it did it before or not. I don't think its anything to worry about, its just a flap to reduce noise under 3k rpm.
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