That almost sounds like a drone sound. There was a bulleting to replace the center pipe. It comes with a damper on it but all it does is minimizes the sound.
That drone sound is from the center pipe flexing. Also if you have loose exhaust bolts and nuts it will cause the center pipe to flex more making the sound more obvious. Let us know if the information helps resolve your issue.
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Sunday, May 16th, 2021 AT 1:18 PM