Our 2013 CX9 is truly a great vehicle with lots of get up and go! We would really like to "hear" it better as well as tune up the performance a bit by installing a better, high performance muffler system. Anyone out there done this? Results?

 

doesn't look like Magnaflow makes 1 or Flowmaster, or Borla.
Good luck. best bet is go to a muffler shop and hope they can custom fit something.
A wider pipe will yield a better sound, deeper tone.