To the point, helpful, answered the question. Perfect, thanks!Map2 and Map3 are basically the same map with a 1psi difference. If you start getting significant knock on Map3 you can back off to Map2 and try again. It's for dialing in optimum boost with varying fuel quality without going to Map 6.
The peak boost parameters for Maps 1-5 haven't changed much over the years. They've been updated, improved and optimized, and some functionality has been added, but the targets have pretty much stayed the same.