I don't know about downloads for the SERK. At the time I added the pipes and air cleaner the 110 was still pretty new and there weren't any downloads available. Maybe that hasn't changed. That just means it will cost you a little more...
Not a big surprise if you've had your bike for awhile.
That means you need to get something like a SERT, a Power Commander, Vance & Hines FuelPak, or something along those lines. Then like 07 CVO (Mark) says, take it someplace (reputable) and get it dyno'd.
If there aren't any good dyno shops around then you may be able to use a "canned" map from DynoJet (makers of the Power Commander) or sometimes other guys running the same or similar setups will share a map. (Maybe even on this site? Not sure about this.) While this isn't the optimum approach it can be a workable solution.
Another approach is to tune it yourself. I think Nightrider.com sells a wide band oxygen sensor and data logger that can be used to tune your own bike -if you have some reasonably good skills and can understand and follow the directions.
Good luck, and keep us posted on your progress.