The torque split was controlled from within the car. I am pretty sure that as tyre's go off in the rear you would dial(0,1,2 on the switch) on more front split to compensate for the oversteer.
In the picture it's the black box just behind the shifter on the tunnel with the switch and small LCD screen.
P.S. turbo x-trail......doesn't offend me....the last time I looked I thought that forums were used to get info as well!...lol