The new Porsche 911 turbo has improved its predecessor’s Nurburgring lap time by 10 seconds with a 7:39. The new car is now 0.2 liters in displacement larger coming in at 3.8 liters with variable vane turbochargers. Power is up 20 hp, and weight is down 50 lbs. Still 12 seconds slower than Nissans claimed time of 7:27 for the 3.8 liter, twin turbo Nissan GT-R.
Source : Autocar