DTC

If I am understanding correctly, to get the most out of my 2009 JCW I should turn off the DTC and hold the DTC button down for 3 seconds to activate the electronic differential?

Following up on this, if you hold the DTC button down for three seconds, you turn off all of the stuff that the car controls and makes for a more natural, better feeling ride, in my opinion. This is in conjunction with hitting the SPORT button.