I had Johnnycheese tune my DRZ recently but he didn’t have much luck - it turns out the carb was not set up properly for my bike so his tuning attempts were futile. So I spent last weekend pulling the carb off my bike and rejetting it myself according to the best sources on the Internet. I’m pleased as punch with myself - this was probably the most mechanically difficult thing I’ve done so far but the jetting guide was good and the actual process went pretty smoothly.
In the end, the guide’s recommended settings seemed to work on the first try! The bike idles smoothly now and my mileage has gone from 35 to somewhere around 55. Yeah, it was that bad. I’m going to head back to Johnny’s place Saturday and get the bike back on his dyno so we can do a little final tuning. His dyno can analyze the exhaust gas and pinpoint the best setting for the fuel mixture screw. I’ll update this once I’ve gone through a full tank with the bike fully tuned. It’s been quite an adventure but the end is in sight!