Trust me if you have a Turbo Cayanne you must do this...
to your SUV. As I posted earlier my muffler was taken off and straight pipes run from cat. I was amazed when I picked the SUV today. The sound is the best sound I have ever heard from a V8. It is deep and mellow but the weird part is that it is not loud. I was told that the turbos and big cats displace the sound. So it might not work as good or another words be too loud in the Cayenne S. At all speeds including highway there is no res or vibrations. Even the Brumos racing group who put it own were taken back of how good it sounds. So if you want the beast to come out and play but yet concerned over your neighbors you might want to try this. It will save you many dollars and time waiting on the PSE