Sorry if this has been posted but I thought some of you may want to know. I was reading the new HyperRev book with all the parts for our Z and I came across page 98, I think it was. It says that if you unplug the yaw sensor in the center console (so that's what it was) you can completely disable VDC, because turning off the switch doesn't completely kill it. What more, ABS will still be active. Of course, their is J-spec cars but I'm sure it applies to ours, too. So here's my disclaimer: unplug at your own risk.