If your bike is mostly stock and you have only modified intake air filter setup and exhaust, I dont think it should be necessary to put your bike on a dyno and let someone tune the carbs or fuel injection mapping.
If you have changed the pistons and cams, put a hyper charger or turbo on the engine.. then you would be looking at running the bike on a dyno. I am assuming the equipment can also measure the levels of oxygen in your exhaust and determine the fuel mixture.
Just tweaking the carb settings for maximum HP output does not tune the engine correctly. Peak HP may be obtained with the engine running very rich or lean, and that is not acceptable for a street bike.
The other thing to keep in mind, if something is wrong with your bike - plugged jets, dirty injectors, flaky fuel pump, wonky air intake system, vacuum leak, bad sensors, low compression, burnt valve, leaky rings... you cannot tune those things out. If your bike is not 100% when you put it on the dyno, you are wasting your money.