Well, forgive me for being suspicious.
I am from an era where the major seller of chips for road cars had the nickname "Destruction Techniques". You can probably guess why.
And "tuners" were selling Group A Ford Motorsport chips (camshaft, greys, 3-bar etc.) as a road chip for standard cars claiming it would give 280bhp. One of those "tuners" wanted me to copy the eproms for him for a tenner, provided I would supply the eproms.
I declined, because Industrial grade eproms were more expensive than that. He said commercial grades would also do the job. Yeah, Right. Until the 2nd day of your wintersport holiday and the car refuses to start.