Ironlung
Post missing.
if you're not planning to modify the bike, there is not much to be gained there... some SD's suffer from fueling problems, PC is an easy fix, but if you have no issues with your fueling, i wouldn't bother...
and the difference btwn pc3/remus? mainly different manufacturer, some functions available with one but not other. i like PC3 because most dyno operators i've seen use Dynojet, so it's just easier.