I picked up a V exhaust from a member of this forum and had it installed yesterday. The sound is almost indiscernible from the stock except under load it has a deeper tone. I may consider removing the fiberglass packing in the future to add a bit more grunt. I was actually surprised that inside the car it sounds identical to the stock exhaust. But the tips are what it is all about! I can't believe Cadillac skimped on the stock CTS and didn't put tips on it!