I just put on the Borla Cat Back yesterday. The sound is great,, and it was an easy installation. :thumbsup:The stock system can come out with a helper, I had none so I made one cut after the first bend before the muffler. Don't pay a dealer big bucks to put your syatem on if you have any mechanic ability at all. I haven't heard anything sound this good since putting a system on my Ducati 996.