Well personally im undecided! There are many threads on here about the pros and cons of buying such ecu!
Just do a search and you ll see what I mean, Im about to purchase an ITG air filter to replace my standard one!
And then maybe the ECU but the power gain is about 5 bhp across the rev range, and legend states that it makes the little pocket rocket a little easier to drive!
Frosty has got one along with a couple of others! youll get used to the power and then youll want more, but arent they great when they come on cam!