I have one and tune it myself with w Factory Pro Teka unit. I also have a dyno at my disposal so that helps also. The sound is great real deep at lower RPM'S but once you twist it open it howls really good but not obnoxious sounding. Very nice peice. You will not be disapointed if you get one.
The fit is excellent and quality is outstanding.
Do you have the carbon or titanium can? Have any idea what the weight difference is between them? Did you install the exhaust yourself and if so how difficult was it to do? After reading the responces I got I am definately getting one.
I have the Carbon Can. As far as the diff in wieght I don't know. I have noticed that the carbon cans generally have a deeper tone to them. My buddy has the same one with the Stainless can and it sounds a little different. Not much but you can tell at idle there is a diff between the two.
I installed mine myself with no problems, just make sure you take the Radiator loose or completely out your choice. I took mine loose and had good luck with getting the header into the manifolds on the head, once you get it you will udnerstand what I am talking about. Then I had to lightly tap each one of the head pipes to make sure they were all the way into the manifolds. If you don't do this the header may touch the fairings. Let me know if you have any other questions.