Are you holding down T/C button for the 8 seconds until it says "advancetrak off" on the screen? As far as I know, I've never had it come on while racing or any time I didn't want it to.
Thats strange Sai. Sucks you have to disable it in the tune for the car to run right though.
Good runs! Trying my best to be out there next sat to do some shake down passes on the turbo setup. You gonna be out there?