Porsche 911 Turbo
From Porsche press: The sixth generation of the range-topping 911 model provides towering performance in a practical, stylish and functional package suitable for everyday use. Power comes from a revolutionary, 480-horsepower, twin turbocharged, 3.6-liter boxer engine featuring Porsche’s first application of variable turbine geometry (VTG).
The new 911 Turbo also offers a redesigned, electronically controlled all-wheel-drive system, and evolutionary styling.
For the first time, the power unit of the new Porsche 911 Turbo features an exhaust gas turbocharger with variable turbine geometry (VTG). VTG provides for efficient control of the exhaust gas flow throughout the entire range of engine speed, guiding the flow of air in exactly the right direction and at the right angle to the turbine blades. The result is yet another increase in engine output, despite engine capacity remaining unchanged at 3.6 liters, up from 420 horsepower to 480 horsepower. Maximum torque, in turn, is up from 415 lb.-ft. to 460 lb.-ft., and meaningful twist is on tap beginning at a low 1950 rpm.
Benefiting from a newly developed all-wheel-drive management system, the 911 Turbo is able to convert the enormous power of the engine into practical performance on the road with optimum traction in all conditions. The standard Porsche Traction Management (PTM) system features an electromagnetically controlled multiple-plate clutch for distribution of power front-to-rear. Responding within 100-milliseconds to both driver input and road conditions, PTM is able to immediately transmit more power to the wheels that can use it best whenever required.
Equipped with a six-speed manual gearbox, the new 911 Turbo accelerates to 60 mph in only 3.7 seconds (0-100 km/h, 3.9 sec.). Equipped with the optional Tiptronic S, the car completes the same sprint in only 3.4 seconds (0-100 km/h, 3.7 sec.). This makes the new 911 Turbo the first sports car from Porsche with quicker acceleration with the automatic transmission than with the manual. This is the result of the interaction of the turbochargers with their variable turbine geometry, the Porsche Traction Management, and the new Tiptronic S set-up.