Boy, a lot of negative Karma here about electronic ignitions! I guess that the auto industry didn't know what they were doing when they switched from points to electronic ignition. Their claims of better gas mileage, more power and lower emissions are just marketing BS.
1. As far as needing a regulated voltage, the PAMCO works from 3 to 18 volts because it does not have electronic advance. The coils are the limiting factor because they have to have a certain amount of current to work. The Hall effect sensor has a built in voltage regulator. The transistor doesn't need one. Those are the only active components.
2. You can use the stock coils and stock mechanical regulator with the PAMCO. The PAMCO, or any electronic ignition system or points booster, will produce 50% higher voltage from the stock coils than the points will.
3. So called advance curve mapping is only effective from idle to about 3,000 RPM. The engine spends most of its time above 3,000 RPM. Unless you have some means to monitor the load on the engine, such as the old fashioned vacuum advances, you cannot safely "map" the advance above about 3,000 RPM. Think of the advance mechanism as a retard mechanism that allows the engine to idle smoothly and start quickly.
4. Here is a chart of some results I did in testing the XS650 PAMCO with various coils and spark plugs which showed a significant improvement in MPG.
Improved gas mileage in this case is a result of a better spark because nothing was changed to lean the mixture. In fact, a larger main jet was installed for the last two runs and I still got better gas mileage. The improved mileage was a result of the engine running more efficiently. Greater efficiency equate to more power, all things being equal.
Note: The improvements shown by these tests are attributed to improving the spark by changing coils and plugs. I do not sell coils or spark plugs.
With all of this negative Karma about electronic ignition, perhaps I should build points conversion systems for cars that the people that think electronic ignitions are all about marketing drive. If there is anyone here that is down on electronic ignition and drives a vehicle other than their motorcycle that uses points, please chime in and tell us what vehicle that may be.