I just changed out my gears on my 2000 gsxr600, 2 gears down in front and 4 up in back. Needless to say, it's got way more pickup. Unfortunately, I slowly pass people with my speedo saying 95 mph and they're barely going 65 I'm an electrician, so I know a little about circuit design. Anybody got ANY info on the yellow box or speedo healer? thanks.