There are some sites that tell you how to uncork the bike yourself but i notice Honda have a power up kit for sale. How does the kit relate to doing it yourself? Are they different or extra parts. Will this make the bike faster than just doing it yourself? Does the power up kit make the exhaust still legal? I live in Aus and they come street legal out off the showroom. Looked around and seems the 650r is the right bike for me but there seems to be varying views on how to uncork this bike.