I purchased a new 07 XR650L about three weeks ago and have about 400 miles. I'm very satisfied with the bike both on and off road, it's just fun to drive. I enjoy the doing the mods, and have been at work on the bike already. To date, I have replaced the handle bars with Pro-Taper ATV High, performed Dave's carb adjustments with jetting 55/158, removed the snorkle, and removed the smog stuff. Removing the smog stuff took away the backfiring, and taking off the bike really cleans things up. This combined with removing the snorkle and the carb mods really improves the performance with smoother throttle response. Question for you guys, what is the best air filter to replace the stock? I'm using the bike for both on and offroad, but I don't normally ride in a ton of dust although its possible.