homologate

You can get really close with certain homologated models though.

The Hybrid Systems for LMPs have to be homologated at the start of the year which prevents development of them during the year.

The power train was homologated for the season at the end of February, so the design was finalised prior to the third pre-season test.

Cars are generally homologated for a large geographic area, which might include Arizona even if the car is sold in Canada.

Unfortunately, and despite the repeated warnings of the Chinese embassy and many hospital managers, they ended up buying the supplies to a non-homologated Chinese startup, so the supplies cannot be used.

In most countries, changing your intake or doing an ECU remap is less dramatic than bolting on a turbo on a NA car but it is nonetheless exactly the same: your car is no longer complying to characteristics from when it was homologated.