doesn’t get as much attention as the increased power, but the 911 Turbo’s new all-wheel-drive system is the first actively controlled AWD system in a 911. By comparison, the system in the Carrera 4S uses a mechanical viscous coupling to transmit power to the front wheels, only reacting after rear wheel slippage is detected. The new electronically-controlled AWD system in the 2007 911 Turbo, called Porsche Traction Management (PTM), uses sensors to constantly monitor changes in driving conditions such as acceleration, wheelspin, oversteer, and understeer. PTM then reacts within milliseconds to deliver perfect levels of power to all four wheels for optimum performance and control.

Among the new features found on the 2007 911 Turbo is the Porsche Stability Management (PSM) system, which includes enhanced brake functions such as pre-loading of the brakes, which detects when you abruptly lift your foot off the gas pedal and then instantly pumps brake fluid from the PSM control unit to the brakes, readying them for action before it even feels your foot on the brake pedal. PSM also allows for a certain level of brake pressure without applying maximum brake force so you can “feather” the brakes to retain forward momentum.

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