Hellfire, there are plenty of tunes out there. And they will get you in the ballpark, but there are so many other factors that come into play, altitude, grade of gas, air fuel meter accurarcy of dyno, etc. And like I said you may be perfectly fine and happy with one of the tunes out there. I rode for over a year with a slightly modified tune created by Tuneboy before I went the PCIII plus Tuneboy route.
If your dealer does tuning with a PCIII then there is no difference between the Rocket and any other bike. I take mine to a Suzuki dealer to have it tuned because my dealer doesn't have a dyno.
The great thing and biggest problem with Tuneboy is that you have access to all of the fuel maps, (two for each cylinder), and it is a very long and tedious process to dyno tune because you have to make a change, load it, do a dyno run, shut the bike off, make the change, load it and repeat. Add on to that the learning curve for a dyno tuner to get familiar with Tuneboy. While the PCIII makes the changes real time while the bike is on the dyno.
Go to the Tuneboy site and download the software and some of the Rocket's tunes. It can be done for free. It is the cable and the software key to unlock your specific ECU that you pay for. That will get you up to speed quicker than anything else.