CVN's Explained.

[rcr1978]

So basicaly if the flash data was changed and the CVN was not or was made the same again a emission law would be violated.

[GMPX]

So basicaly if the flash data was changed and the CVN was not or was made the same again a emission law would be violated.

Correct, if you change something in the tune and then correct the CVN to the factory value that is an emissions violation, of course we could have easily made the software do that but that CVN correction function is not about that.
I use the analogy that if you buy a gun you choose to shoot at a target, wildlife etc, or you choose to commit a crime with it. Same for this, manual CVN correction has a perfectly legitimate reason to exist, if you choose to use it illegally that is your choice.

Cheers,
Ross