Fitted one a few weeks ago with TOR's to my 2008 Touring. Probably took all of an hour to do, its easy. I left the stock airbox for storage. I then did a 7,600 km trip and couldn't keep the smile off my face, completely different bike. On the instructions its says you can get away with the 12 min tune. But because I did the pipes as well I had it Dyno'd. They seem well worth it and have a extension harness so you can plug the air temp sensor in the back.