Kelv.

The process is this:

Installer reads the file from your car, to do this he needs to select the correct protocol off the handset so that it knows how to read the file.
The file then goes to headquarters in blackpool.
They modifiy YOUR file, and they send it back again.
Then the installer installs the new file.

The act of reading the file off wont effect the car in anyway at all, it is literally just taking a copy of the file in its raw format, if the protocol selected was the wrong one then it might end up wrongly annotated although I would expect Kenny to spot it when he is doing it TBH, I've sent him a file before by selecting the protocol by number rather than by model type (yes im sad enough I knew the protocol number off the top of my head ) so it arrived at him with no model information on it and he phoned me up for further details.

In the box when we send the files off to Kenny in the first place we have the ability to write in them any info required about the car, so if he put in there "its a 182 but 172 was the only protocol I could find listed" or similar then Kenny will either be able to do it or not depending on if the file is compatible, but he wouldnt send something back that would mess up your car.

The early 172 F4R was normal throttle cable and the later ones were fly by wire, so I would imagine that the map would be visibly different to kenny and he'll spot that in an instant and call the installer if he has put it through as a 172.

Why the hell didnt you use Tank Mike in the first place as installer though, he's done loads of these cars and would have given you a mates rate discount as well Im sure!