Ok, so I went riding with a group of friends today and one of them told me that everytime I gunned it or when I downshifted a big puff of black smoke would come out of my muffler... They said it didn't look like smoke from burned oil and it didn''t have that nasty exhaust smell to it... Anyone have any ideas what it might be? I currently have the TOR CF muffler on it and it should have the TOR tune on it too... Any hints for to me start my examination would be greatly helpful
