Here's a quick breakdown for you. yes, you need it tuned. even bone stock. the fueling is off from factory due to epa crap in america. Sadly, on your bike, there is a lot of software restrictions that only fuel tuning cannot fix.
the other answer is yes and no, a dyno shop will need a power commander to tune your bike. unless they can flash the ecu, in which case they don't.
If you can, look for an ecu tuner in dallas who uses woolich racing or ftecu. an ecu flash tunes your bike to its fullest potential, fixing issues in the bike that fueling can't fix because there are software restrictions in your bike from the factory.
If you can't find a local dyno tuner for this, you can purchase the equipment yourself and flash the ecu if you are a DIY'er
Your other options is to mail it to a dyno tuner who provides mail in ecu flashing services. i recommend 2 wheel dynoworks. 2 Wheel DynoWorks ECU Flash
with an ecu flash, you would not need a power commander and can sell it or return it to revzilla. the tuners with mail in flashes should have exhaust specific ecu flashes. the list of things a tuned ecu flash changes is very long and there's a lot of threads posted about it.
i know the last thing you want to do is buy an ecu flash for ~$300 but returning the pc5 should offset that cost and it will get you a better performing motorcycle