Okay, I have kind of a complex question that I'm having trouble finding the answer to.
In fifth gen and previous game, PIDs of shiny Pokemon had no affect on their IVs.
(i.e. you could Pokegen a shiny Pokemon and change its IVs to your liking, and it would still be legal.)
Is this still true in X/Y? If I got a legit shiny (not Powersaves'd) and modified its IVs using Powersaves, would it be flagged as illegal?
I haven't been able to find a reliable way of determining what is and isn't illegal in X/Y. Pokemon Bank doesn't have hack checks (only Transporter), and Battle Spot appears to accept any Pokemon that is from X/Y.