When you get your AP you are required to load the first base map
Included is a white connector. You will plug this in to the white connector under the dash, you will need to plug the 2-green connectors in (which are also under your dash). You then choose the base map you want to flash and bam your done. It takes about 20-min to flash your first map.
From there on out you can switch maps using the realtime maps
You will noticed the car drives a heck of alot more smooth. Turbo spools quicker you do add some HP but Stg 1 is not a huge jump by any means. Drivablity is the most seen improvement