Whats the spitting!?

Ok well I hope you can hear it. I havent figured out what it is yet. The exhaust is obviously demolished. Would that cause this? 71 Demon 225 /6 1bbl. Everything seems to be running fine. This has just been bugging me.

http://www.youtube.com/watch?v=GD8GuMCffpM&feature=youtu.be