tuning. I just was able to provide the ECU and make things happen. From what I've checked on for adding VTC, Greg at SZ recommended running a window switch much like a nitrous setup that turns the VTC on at certain RPM's and back off. I'll try and get things up and running this weekend, but I'm a newbie...fast learner though :)
From talking with Matt, it would be a separate addition to add it into the control AFAIK. Someone more knowledgeable I'm sure could help.