often the tin covers come lose from the exhaust pipe which they surround and then thye rattle , people will sometimes cut those parts off.

Ive tried various attempts and right now I have a spring between that bracket in the middle of the pipes that the bolt goes through and the double pipe cover towards the cat. On mine the cover part is loose from the two pipes but the spring provides enough tension just so the parts can't rattle. I tried driving screws between but that came loose, the spring idea seems to be working ok. If I felt like taking it apart I'd weld it back to the pipe or cut the thing right off, but I dont see the point in going there.. the problem was just the rattle and adding a spring fixed that. since the parts are being pulled together and against each other by the spring tension, they can't rattle now. the only purpose of the spring I added was to stop the rattling. adding a spring is an easy 5 minute repair. if you can;t figure out what to hook the spring to you can add a hose clamp just for that.

that pipe runs hot so rubber might burn up if it's in contact with the hot pipes.