Limited information, but the symptom/sign of the pentastar tick is a single cylinder misfire. If it gets bad enough, it will CAUSE cat codes (P0420,P0430) as the unburned fuel from the misfire gets into the cat. In this case though, your problem is more likely to be something other than the tick, because you have those codes in isolation. And that you have codes for BOTH cats at once is very telling. Given that your complaint is noise, I'm guessing you have an exhaust leak that's allowing BOTH cats to give wonky readings. There are other possibilities - it could be overfueling which would do that too, but it would result in other codes as well. Too much fuel would also sound loud and blatty, and you'd likely see black smoke or soot out of the pipe. The root cause of this problem is likely something very simple - an unplugged connector could make it overfuel, a wiring issue at the main computer.