Thread: Rattle noise
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Old 01-15-2013, 09:40 AM
Greatdane84 Greatdane84 is offline
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Location: SW Florida
Join Date: Jan 2013
Posts: 5
Mein Auto: 09' 335i Sedan

I just got an 09' 335i, and occasionally I was hearing the left exhaust on startup. The actuator which controls the butterfly valve was causing this and I simply disconnected the actuator from the trunk area so my valve is always open. Yet to hear the noise again.

You can search for "golf tee mod" and find a lot of results about this.
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