[INFO] - Switchable maps - Mustang 5.0 2020

Hello everyone!
Asking for a friend *wink*...
Let's say that I bought a Mustang 5.0 and due to *me* not wanting to pay extra salaries to our s--t government, I have a detuned ecu...
How would I go/Is it even possible, to have two maps loaded on a device and be able to switch between the detuned map and a stock map? (Stock map source to be determined still.......)...
The popo here where I live is a fan of putting cars on the dyno to see if the reported power is correct or not...
Repeat.... asking for a friend *wink*
No BS on laws and stuff... I don't care for the moment... the question is Is it possible and if it is How would *I* do it?
Thanks a lot!

Fabio

It's already full with one calibration in it. They are made to be as big as they need to be. It's not a [expletive] USB drive.

Hi yeah I guessed that much... I meant more in the way if there is something to buy that for example plugs into OBD that can store two maps and load them at the press of a button...
Not even instantly but just to have them ready to load without the need of a laptop...