Hi~~ I'm Power Booster V2 user! This is really great product!!

Better gear changing, and it is obviously better..
Front light brighter.
Fuel consumption donno yet, but it seems better performance on this..
Sound system slightly improved.
Engine sound seems still loud, maybe I didn't notice it last time.

Overall, it is a really good product!! Worth for every cents you pay for it.

Thanks IceCube!!