I picked up this unit back in August and haven't had time to install it till 2 nights ago. It didn't go as smoothly as I hoped, Tube #4 was a little out of shape and wouldn't fit into the collector. I was super gentle coaxing it back to shape to fit. This really was annoying since it was purchased new. taking the stock exhaust off was otherwise pretty uneventful...well until I had to remove the exhaust servo motor....Lots of very very bad words were properly annunciated during this part of the instal. As expected I did get a C46 code with the servo removed. Once everything was tightened back to spec, the bike fired up properly and without any drama. Sounds amazing with proper pops when coaxed a little and the bluest of flames came out to play.