I've had this bike since new. I love it. There is a good chance it is the single most farkled GS on the planet. Pick anything on the bike, and it has been improved. Anything. I installed a booster plug years ago, and a G2 throttle tamer. The combination seems to help with the "surge" off idle. So does the Rekluse... ;-) Right now I have 14K miles on the bike. I installed a Power Commander V on my 2013 Honda CB1100. Night and day instantaneous improvement. Went from thinking about selling the bike to loving it. Would I notice a big difference if I installed one on the 800? Only really interested in hearing from those that have gone this route. Not theory... Thanks!