I believe the bike would run more than just noticeably better with a tune from a good dyno tuner. Is it worth it? For me it's an emphatic yes! For someone who may be broke or not mind the motor running hot, throttle response being lethargic, power not being as good as it could be, maybe it's not worth it. The customer keeps demanding larger cubic inch motors whole the EPA demands tighter restrictions. This is a "perfect storm" for crappy running bikes that run very hot and feel lazy. EPA and performance are like water and oil, they do not mix. With an air cooled motor that greatly fluctuates in temperatures, heat is the enemy of your engines components and electrical parts. In the end, what the customer wants and is willing to pay for is his call. I personally can't imagine buying a CVO "the flagship" Harley Davidson with the cost they demand for new ones these days and not tuning it. It can extend the life of the bike and unlock the opportunity to enjoy the bike much more. That said, it's not worth the price of a tune if you just take it to any ole guy with a dyno but if you get a true custom map that is developed throughout and every table is optimized, the difference is well worth the money spent IMO. A bike that has a spot on tune done to it is something you will notice and appreciate each and every time you push the start button, roll on the throttle and well tuned bikes tend to even shift better IMO.