No, the engine control software is the same and somehow (there are innumerable ways to accomplish this) operates differently on the road than in the test cell. It’s NOT clear if it meets emissions while while driving on city streets in LA and doesn’t while driving in the mountains surrounding the Basin enough to have somehow annoyed the EPA (and CARB, I assume).
Ah, thanks, can’t quite get my mind around how they did it but then my car electronics tweaking is limited to inserting the handheld into the OBD port and mashing a few buttons (grin).