Ok so I am trying to decide what exhaust to put on my 2013 SE ultra. Allot of people on here seem to love Fullsac. Here is my problem, If you look at the dyno sheets on his web site, the stage 1 numbers do not match up. If I do a stage one kit, will I get 107 HP or 94HP? Thats a huge difference. Not instilling much confidence in there products. Just my opinion. Now don't get me wrong, I used there 2" core baffles and there true duals kit on my 07 but back then all I was trying to do is quiet my bike down (not looking for power).
http://www.fullsac.com/sleeperkit110.html
http://www.fullsac.com/sleeperkit110stage2.html
If you do the stage 1 kit, you will most likely see an improvement of 10/10 HP/TQ plus or minus over what you started with, assuming your motor is "AVERAGE".
To say you should get "107" HP will depend on lots of things. Most likely you will see MORE than that number with a '13 110".
This is what I personally have seen after a few dyno runs on his dyno with different bikes over the years. We would do the same bike, same tank of gas, etc etc tying to keep run conditions the same.
Best of all, the bikes all ran very smooth.
JMHO