In Detroit, Porsche, another highlight of its product range is presented. The top models of the 911 model series – the 911 Turbo and 911 Turbo S – now boast 15 kW (20 HP) more power, a sharpened design and enhanced features. The models are from the outset available in Coupé and convertible versions. The Twin-Turbo six-cylinder engine in the 911 Turbo 3.8 l now has an output of 397 kW (540 HP). This will to win was modified inlet ports in the cylinder head, new fuel injectors and higher fuel pressure achieved. The 911 Turbo S developed now 427 kW (580 HP) thanks to new turbocharger with larger compressors. Porsche is still the only manufacturer to use turbochargers with variable turbine geometry, in gasoline engines.