FZ1 exup motor and cables

[gel]

I am looking at an 09 FZ1 it has an after market can but also has the original can as well. I have asked if the bike still has the exup cables and they can't see any. If the exup motor has been removed would this not throw an ECU error. I saw no error when I road it. And it seamed to ride fine. Should I be worried?