I have an 03 WR450 and love it except for one thing, I ride on the trails and on the street, when cruising at a steady pace the engine seems to studder, I have been told that grey wire or throttle position sensor mods will solve this problem, maybe a toggle so I can turn either on or off?? I would like to be able to cruise the roads and dirt roads without the miss. I do have the YZF exhaust cam installed and I would never go back to the stocker, but it does seem to magnify the problem a bit. Any help would be appreciated. Thanx. Dirtmizer.