do all the things on the dtr.net website. Have juts done all of these to my 02 dtr , with a good improvement. Trickiest bit, was activating the servo operated powervalve. mine was deativated, so follow the notes for the earlier model. Powervalve
effectively has 4 settings, off, on a bit, on full, and runs like a pig. Make sure alignment marker is correct, then take the plastic bit that drives the powervalve off, you' ll see that on the back of the insert only allows the powervale to fit in 4 different positions. trial and error to find the correct one. When you've got it right, you'll know.