Yamaha Aerox 50 Review

Yea ive only had the bike a month or two now and its fine all stock 60 down steep hills 50 on flat :) pretty good acceleration although i took a tube out of the bottem of my exhaust thinking it was a another restricter ive put it back on but now it goes slower :( can anybody help me ? :( [email protected] if u know how to fix this problem. Apparntly thers not enough petrol going through my exhaust message me if u know how to prevent this thanks you Great for teenagers even adutls :)