bro i having speed problem with my nouvo...any idea for my modification....my nouvo all these while can go up 120km max but recently after i change brand new tt900 tyres...its seem heavy...can touch around 115km max but slower a lot edi coz tyres seems heavier....a lot of people ask me to change CDI??...after changing racing cdi izit posible the duration for me to speed till 120km faster...in terms of acelaration....as i understand change racing CDI will only increase a bit of top speed