[pascal125]

dah,all pocket bikes are 2 strokes, a 49cc 4 stroke would just suck and get 2 about 20, he may have done i properly which is when u hav a small tank of NOS and it injuects straight in2 it but u hav 2 activate it and that why all that power cal at once because he had just put in nos and for a 2 stroke tiny engine like that nos would kick but but i ould be EXTREMELY surprised if he could ever use the engine again, especially since all 49cc engines break down after a few rides, ours broke down, we had it running but well everytime we get it starting once we hav stopped it it requires another couple of hours to get it running agn! lol