Paul I am glad the bike did well for you. I have a DRZ kickstart ( really three ) in different forms. I have a DRZ 436 I use for trail riding with head work, valves, cams, valve springs and exhaust. I had to change the ignition module due to always hitting the rev limiter. The revs built up so quick I couldn't shift it fast enough, especially in dry slick conditions. After the change I can rev the engine to get the benefit from the engine work without hitting the limiter, most of the time. It is quite a fun bike to ride. What I have done is really not needed though. The DRZ is a great trail bike in stock form. A little heavy but that can be trimmed some with a little work. Originally posted by Paul Zeglovitch: Well, I have been boring everyone with my jetting, exhaust, sputtering dilemna for some time so this will be my final comments. I rode the bike all weekend and took everyone's advise and shifted EARLIER and enjoyed the low end and midrange power.. I RARELY hit the rev limiter after I started doing that. I was riding trails all weekend and the bike did well, my conclusion is that this is a great TRAIL BIKE and that is pretty much all it is going to be, just enjoy it for what it is or move on..Thanks to everyone for answering my questions..