Question? Does the SEEG have a Stage 1 ECM or is it considered stock? If I want to install a PC, do I need the Stage 1 ECM too? (Dumb question, I know)
No, it's not dumb at all. In fact it's been a point of confusion before.
First off, you don't need to do a Stage I chip for the PC. The Power Commander will remap to it's desired settings from whatever baseline you start it from. The standard map on the bike is not as "good" as the Stage I map though.
So.... the only reason you'd load the Stage I map would be for a bit of redundancy. With it loaded you'd have a map much better suited to your exhaust and air cleaner options that would be in place and on the bike just in case the Power Commander ever crapped out and you had to spend the five minutes it takes to remove it on the side of the road.
You'll want to decide first though. After all, you won't want to change the baseline map that the Power Commander is working from after the Power Commander has been tuned.