Don't see why the mappers asking for a base map to start with. A emu is just a piggyback system so the base map is on the stock ecu the only time u should need to have a basemap is on a standalone. The only thing that we can upload would be our own indivual map but as there set for our cars there's not really any point as it could cause more damage than good and at end of the day u pay the mapper For them to set up your car not to edit someone else's settings