Dyno tuning ordinarily only makes sense if there is a problem that needs to be solved, or if the last tiny bit of power really matters (e.g. on a race bike). For the things that most people do with their bikes (slip-on exhaust, etc) these don't have any meaningful effect on the way the engine runs, and for a street bike, normally the last tiny bit of power doesn't matter, either. What have you done (or are proposing to do) that warrants re-tuning? What "problem" are you trying to solve?
If there is no problem, and it's on a more or less stock street bike, leave well enough alone.