You know, I believe that GM knows after market tuning is imperative for sales of these cars. Look at the misery the Europeans go through to tune their cars, some can't be tuned because of the level of security in them.
If GM USA wanted to stop people fiddling, it could be done right away and there's nothing we could do in this day and age. They have plenty of computing power in the ECM's to stick in some uncrackable security. But then how would their reputation be when all you see at the strip is 13 second Camaro's?

As for the E92 ECM, I'm not sure why I am already getting PM's about it, I don't even know what it looks like, let alone what is inside it. 'can we tune it'? I don't know, ask me in 2014.