Pops, bangs and all manner of funnyness??!!!!
 

Since I've taken the baffles out of me end can (Blue Flame), the bike keeps popping and banging but in the airbox :S .

Any ideas????!!!!!!

Also, it has started playing up when trying to start it. The motor goes to turn it over but then makes a burring/buzzing sound and wont turn it over. I'm beginning to think it might be the battery but not had chance to check it. Any ideas????!!!!