The model could also be ordered with PTV, Porsche Torque Vectoring, which will brake the inner wheel to provide turning-torque through a curve. The look of the facelifted model was left mostly untouched from the original 997 turbo. The taillights were updated to LED to match the 997 Gen II along with changes to the front lamps. The exhaust pipes are now also "fatter" and the standard 19 in wheels now have a new design. Thanks to revised dynamics the facelifted 997 can handle 1.3 g forces on a skid-pad according to Porsche. It is believed that the updated 997 Turbo was benchmarked against the Nissan GT-R in response to 3rd party testing between the 997 Turbo and the GT-R.