The Turbocharged version of the 997 series featured the same 3.6 L twin-turbocharged engine as the 996 Turbo, with modifications to have a power output of 480 PS (353 kW; 473 hp) and 620 N⋅m (457 lb⋅ft) of torque. It has VTG (variable turbine geometry), that combines the low-rev boost and quick responses of a small turbocharger with the high-rev power of a larger turbocharger. It also offers higher fuel efficiency compared to the 996 Turbo. The 997 Turbo features a new all-wheel-drive system, similar to the one found on the Cayenne. The new PTM (Porsche Traction Management) system incorporates a clutch-based system that varies the amount of torque to the wheels to avoid tyre slippage. According to Porsche, redirecting torque to control oversteer or understeer results in neutral handling as well as greatly improved performance in all weather conditions.
For the face lifted 2010 model year 911 Turbo, known internally as the 997.2 (as opposed to the 997.1 2007-2009 model years), launched in August 2009,[39] the PTM system was tweaked to give a more rearward power bias. The paddle shifters for the PDK double-clutch gearbox debuted on the Turbo.[39] The turbo uses a different engine. The previous water-cooled turbo models (996 and 997) measured 3,600cc. This new engine measures 3,800 cc (4 L) and was first developed for the Carrera that was launched in 2008. The variable-vane twin turbochargers have also been reworked to increase responsiveness, and the intercooler and fuel system were uprated. The engine has a power output of 493 PS (363 kW; 486 hp) which is 20 hp more than the outgoing model.[39] The steering wheel also houses a display showing when Sport, Sport Plus and launch control have been selected through the optional Sport Chrono package.[39] Porsche claimed that the new 911 turbo will accelerate from 0 to 100 km/h (0 to 62 mph) in 3.4 seconds, or 0–60 mph in 3.2 seconds and could attain a top-speed of 312 km/h (194 mph).
As with the 996 Turbo, the car featured distinctive styling cues over the Carrera models including front LED driving/parking/indicator lights mounted on a horizontal bar across the air intakes. The traditional rear wing is a variation of the 996 bi-plane unit.
A new 911 Turbo S was set for production in 2010. It is a fully optioned Porsche 911 Turbo with a PDK gearbox and sports exhaust as standard. It also comes with re-engineered turbochargers to give an extra 30 horsepower increase to a total of 523 PS (385 kW; 516 hp).
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