I have an exhaust leak, I'm hearing a ticking wen truck first shuts off, looked under and its def coming from the cherrybomb muffler, right at the seal of one the outs.. Now is this something that has to be fixed asap? What does this cause?

 

Do you hear the leak see the carbon or guess it's a leak cuz of the ticking? Thats normal to all ehausts thats the metal cooling and has seemingly no ill affect whatsoever. if yes too the firswt ntwo symptoms have it welded don't screw with clamps.