Well, It's not exactly an ATV shop... but I think Zipper's has a dyno. Just because they hot rod Harleys doesn't mean they can't/won't tune a quad. I would think anyone with a dyno (and knows how to use it) should know enough about tuning to get results.
has anyone had any results, or heard of results from these places? im not one to take anything of mine to a service shop. But i don't really have a choice in this matter so id like to hear of some feedback.