I just won a bid on a wr 450. It has a full fmf pipe, so I'm guessing it has been re-jetted. Other than that I think it is stock. I'll pick it up next week, then want to tweak it a bit. I'm not familiar with the bike- any suggestions from you wr freaks? I saw a mention of a grey wire- whassup with that? Also something about a throttle limiter. If there's a limiter, its gotta go.