Having too much timing will cause issues with heat. Too much heat and you can run into a lean condition / detonation. Looking at your plugs now will determine whether you need more or less heat inside the cylinder.
Not sure what to tell you as far as picking up a better ET, the 6.3 is a pretty good number for a stock framed bike with 200+ lb rider. Maybe a new chassis or doing some really fine tuning on your existing chassis? Once you get the engine running its best, everything else revolves around rider/setup.
Not sure what to tell you as far as picking up a better ET, the 6.3 is a pretty good number for a stock framed bike with 200+ lb rider. Maybe a new chassis or doing some really fine tuning on your existing chassis? Once you get the engine running its best, everything else revolves around rider/setup.