I've got an 06 Busa and it's surging at an idle and I can feel it in every gear when I'm at 2500rpm. I had an air shifter hooked up and thought that might be the problem. I unhooked the shifter and it still does it. Any ideas on what the problem is or is it something that it's going to have to go back to the dealership for? I bought two at the same time and only one bike is doing it so I know it's not something that all the Busas do.