I did a search before I posted this, I didn't find anything. I have a 1993 XR650L and I enjoy riding it but the motor is a little flat. I had an 1988 NX650 that had been "XR'ed" and it would run circles around this bike. I don't need hard hitting power, my 450 does that just fine. I just want the motor to feel less plugged up. The bike has the AMS smog replacement kit and a Supertrapp exhaust, other than that it is stock. I look forward to getting this thing running a little better.