Aricjm15 said:when the mazda WDS computer (their huge scan tool) is plugged in it checks to see if the current flash is up to date also checks the version number. So they would be able to see right away. Also if mazda comes out with a flash newer than what Cobb has they will flash the ecu and you will have a stock mazda tune all over again.
Cobb AP downloads the current map on the ecu and stores it before it installs it's own map(s). So, if you go to the dealer, you just need to unmarry the AP from the car, and the factory map is put back in place.
If you do not unmarry the AP and the dealer tries to flash the ecu, they will be unable to and get an error.