I've got an email in to SCT and waiting for their reply. They have a program for testing new engine platforms with their tech and although the 6VE1 engine wasn't one they wanted to test I let them know there are plenty of people with these vehicles that want more power... We'll see if they even bother replying!
BUt, if JET sells a tune, then that means there is at least 1 company that has cracked the coding already and has a way to input new info over the ecu. That's a start.