backfire

Hey ya’ll Was hoping to get some of your input on a problem that just occurred today. I have a YD-100 motorized bike that I built probably about 7 months ago that has been running fine up until now. I was riding around today and all of a sudden the motor backfired and started to bog down. No...

Hello. This is my first post on this site so any help would be great! I am looking to get more pops and bangs out of my motor just for fun. I have done a little research, and what looks like the only way to get them is to change the timing on an adjustable CDI, which no one sells. The only...