Help, I replaced the speedometer with a digital one, works great but now i have a lot of vibration at 2000 to 2500 rpm and seems to run hotter, when i kill it, it puffs at the exhaust. I did have the bike flashed before with the old speedometer due to would not register half the time when starting. would this have anything to do with it? by the way, ran great before as i just got back from 1 week bike trip with no issues.