So excited to have this tune! That said, I ordered the 'core' model as I live in Canada and didn't want to mess with shipping back and forth. As such, I will be swapping the PCM myself. In doing so, I just wanted to make sure I am doing it correctly. I imagine it is as simple as it seems - disconnect negative battery terminal, unplug PCM connectors, unbolt PCM and then installation is the reverse. Is that correct? Also, is there any sort of 'setup' I have to do for the new PCM? I asked that VATS be disabled as Kelly indicated it was a common failure point anyways - so I don't need to worry about that. I was also told that a CASE relearn is rare on my model year, but if I need to get someone to do it, is there a 'safe' way to do it so my tune isn't overwritten?