That would at least be more expensive. Moving the cheating to harder and harder chunks of the entire system is a fine start.
You can't have perfect security. You can have security that makes bad actors pay more for the privilege of being bad actors.
You can't have perfect security. You can have security that makes bad actors pay more for the privilege of being bad actors.
Or whatever - the point isn't the methods, it's the pattern of one-upsmanship.
So, say I want, for instance, to represent the stereotype person who rolls coal on their diesel pickup and believes global warming is a left-wing conspiracy. Look it up on youtube if you don't know what rolling coal is. (We can get into a whole debate on whether stereotypes are inherently good or bad, but that's not the point. They're a very effective commumication tool, which is why humans are so quick to label and group other humans, but obviously they're only to be used when not offensive.)
And I suspect that a luxury performance car owner would be just as likely to turn off emission controls if it would help performance as a rural pickup truck owner of whatever political persuasion (in both cases).
Hell you could put a green odometer in it and give a tax break proportional to the percent of miles driven in green mode to encourage it's use.
Trying to force car enthusiasts to give up performance will just drive them to older cars which don't have crippling software or dangerous hacks to bypass the restrictions.