Not sure what the "People and Like" models are (Kymco uses different names in different countries), but a Kymco 50cc 2-stroke is pretty snappy as it is. If you're stuck at 50km/hr, you can try cutting the CDI as shown in the middle example. Or you can buy a high RPM CDI from Scooter Assassins (as shown), but they're expensive for what you get. If you can do 60km/hr, you're not going to get much more out of it by doing the CDI.