My exhaust always did that from the day I had it made. It's the metal contracting from cooling off. Nothing to worry about, as previously mentioned.

 

I know what you are saying, but if he is speaking of a more consistent tick then I have to stick w/the resonator. What would be normal would be a 1 time thing not a consistent tick. Metal contracting? It would have to be really hot, I mean...the metal is already heated to a point were it can be bent and cured into a shape. I doubt the car is getting hot enough to make the metal react as if it were reaching a level physics where it would actually contract as it was when it was first molded.