I have been running the fullsac x-pipe, TTS tuner, and 4-inch Rineharts for past 6 months on my 2012 CVO Road Glide. I've been happy with the sound and performance. Decided to try the stock cans with the 2.0 fullsac baffle, primarily for cosmetic reasons. My Rineharts are black, and with black heat shields, the motor (also black) was kind of washed out on the "skunk".
After much dremeling, W-40, and hammering, I finally got the stock baffles out (don't let me discourage you...) and the fullsac baffles in. I took all the packing material out. Upon starting it up, initial impression was a little more quiet than the Rineharts. More of a po-ta-to-ee sound at idle than the Rineharts.
Upon test ride, determined fullsac's have a nice bark on throttle, and more quiet off throttle. Though I did not think it possible for the bike to run better, the throttle response is noticeable better with the fullsacs. Fullsac recommends same map for their baffle as the Rineharts.
Cold here in Denver today or would still be riding.