Post: #8

To be honest I don't have such motocycle but I wanted to help you making research in polish internet and translating some tips. The topic that you linked is OK but there are so many conflict replies. Some people are teling that changing ignition module is enouch, some other that not.

If I had such problem, the first thing I would do is to replace the ignition module (relatively small cost).
->If it helps I would replace back gear to smaller one.
->If it doesn't help I would replace the carburetor to classic one (without electronic) and disconnect ECU. After that again - replace back gear. This will add speed but decrease power. If there is still not enouch power, the next thing to do is change the top of the engine (cylinder 72cc but I don't know how law is working in your country).

One people from the topic above said that he left his electronic carburetor and changed cylinder to 72cc. It doesn't have sense for me. ECU is calculating the fuel dose for 50cc and it will be not enouch for 72cc. It can be even weaker on such configuration.