Just curious, what would you gain by advancing the ignition? Isn't a digital advance ignition, meaning that it will automatically advance/retard to provide optimum power? That said, if you did move the ignition sensor forward, wouldn't the digital advance just back it back down based on the other sensors?
All modern ignitions have an "advance curve". That advance curve has a "static" setting and a "full advance" setting. The static setting is the ignition timing setting at idle speed. Engines will not produce good power if the ignition timing remained at this static setting thruought the rpm range. As engine revs increase, there is a need to "light" the air/fuel mixture earlier in the compression stroke to allow an appropriate amount of time for the combustion process to occur and to develope good cylinder pressure on the power stroke.
In order for this to happen the ignition timing must be advanced in relation to engine rpm. This was originally solved by utilizing a mechanical spring loaded advance mechanism. The combination of advance weight and spring strength controlled how quickly the ignition was advanced vs engine rpm. Vacuum assisted advance was later added and used to improve fuel economy over what the mechanical system would provide.
We next get into the "full advance" setting. This represents the maximum amount of ignition advance allowed. Combine the static and full advance in relation to engine rpm and we have an "advance curve", which can be plotted on a graph.
Modern engines go even further in controlling ignition timing. The old mechanical advance systems were fazed out due to emmisions laws, so digitally advanced systems were put in use. These systems alter the timing based on engine rpm, later versions also used info from throttle position sensors and intake manifold vacuum for even more precise timing. Many newer vehicles also use "knock sensors" to detect pinging/pre-ignition and if any of these are detected will retard the timing to minimize/eliminate this occurance.
Now if the position of the ignition pick-up is altered, lets say timing is advanced 2 degrees, then the entire advance curve will be advanced 2degrees. Digital ignitions like on our skoots rely on the signal from the pick-up coil to detirmine the entire ignition timing curve. If the timing curve starts with the static timing at 10 degrees BTDC and full advance is 40 degrees BTDC, now add 2 degrees advance. We then have static at 12 dg BTDC and 42 dg BTDC full advance. Digital ignitions don't retard timing unless it is in the ignition map or there are the previously mentioned knock sensors.
HOPE THIS HELPS