Everything You Wanted to Know About Ignition Advance

The ignition system I currently have is from Don at FBO, and I've been running it for at least 5 years. He is who some posts are referencing.
Anyone who is that passionate about the ignition system and how critical it is to optimize ALL parameters of engine performance gets my attention and respect, because I also think it is critically important.
I'm going to change it out to a new system from Progression Ignition, but I have been happy with the one from Don.