I don't have the carbon fiber but I do have the chrome hi put mufflers and they sound perfect! I did the cross chamber header with SE breather and SE tuner and I love the set up!!! They sound great! The set up produced 88.9HP and 108TQ.
Like Hulk7 said, the dyno can make all the difference.Great idea!!! I had mine dialed in also by Harley!! They DYNO tuned the bike for almost 3 hours. A friend who has a 06 street glide with cams and a breather and 2 into 1 full exhaust and few others MODS test rode mine and was shocked! He explained that my bike pulls in every gear and at all RPM.. He thought that I had already had the cams replaced. He could not believe that there was no internal motor work done! You will love it.