The 997 Turbo debuted in February 2006 at the Geneva Motor Show. It featured a new front bumper with LED Turn signal strips in the air intakes; the fog lamps were moved to the corners of the bumpers. Large air vents fore and aft of the rear wheels provide other obvious visual cues of the Turbo model.
Also featured was a retractable rear wing, as used on the 996 Turbo. The engine was based on the rugged and reliable 964/GT1 design rated at 480 PS (350 kW; 470 hp) and 620 N⋅m (460 lb⋅ft) of torque. The turbochargers were fitted with a two-stage resonance intake system and for the first time the Engine uses two BorgWarner VTG turbos. The Variable Turbine Geometry incorporates guide vanes on the turbine wheel that change their angle of attack with exhaust speed, reducing boost lag at low speeds while opening up to prevent excessive back pressure at high RPM.
The optional Sport Chrono package allows the 911 Turbo to overboost for ten seconds (1.0 bar to 1.2 bar), increasing peak torque over a narrow RPM range. According to official Porsche figures, the 997 Turbo Gen 1 accelerates from a standstill to 100 km/h (62 mph) in 3.9 seconds with the manual transmission, and 3.7 seconds with the 5-speed Tiptronic S transmission.
Benchmark times to 200 km/h (124 mph) are 12.8 and 12.2 seconds, respectively. Maximum speed with either transmission is 310 km/h (193 mph).