I have a 2009 XVS1100A. I have fitted Baron Nasty Boy Mufflers. Now I have a missfire . It only seems to happen under full throttle. It missfires briefly and then clears it self. At first I thought it was the rev limiter kicking in, but it seems to do it intermitantly no matter what revs im pulling. Its driving me crazy. Mostly in first gear from the lights. Grrrrr
I also fitted a Baron big air kit but bike shop removed this because the vaccum operated needles would not function properly, or so they told me.