Found this thread while searching the forums for this particular issue so please forgive me for bumping such an old topic. I have a 09 Z with a little over 85,000 miles now making the exact same noise in the video maro posted. Sounds like a truck when it takes off. It only happens randomly so it's hard to mimic but I noticed it only happens in gear at low rpms. Has anyone else ever had this issue and figured out what was the cause?
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