The maximum boost pressure of the 911 Carrera S with GPF is around 1.2 bar. The valves are no longer adjusted by a vacuum, but electrically using stepper motors, making boost pressure control faster and more precise overall. This contributes to increasing efficiency, responsiveness, torque and power.Ĭontrol of the wastegate valves is also new. Thanks to a newly developed lightweight cast manifold and the adapted turbine housings, it has been possible to improve the air flow conditions on the turbine inflow and outflow. The diameter of the turbine wheels has been increased by three millimetres to 48 millimetres, while the 55-millimetre compressor wheel is now four millimetres larger. In addition, the compressor and turbine wheels are now arranged in mirrored configuration in relation to the engine, and therefore rotate in opposite directions. Two mirrored turbochargers replace the previously used identical parts. The new six-cylinder engine features forced induction by an almost completely new intake system. In addition to the 22 kW (30 PS) increase in power to 331 kW (450 PS) at 6,500/min, the engine offers 30 Nm higher torque, at 530 Nm between 2,300 rpm and 5,000 rpm. New, larger turbochargers with symmetrical layout and electrically controlled wastegate valves, a completely redesigned charge air cooling system, increased compression, as well as the newly implemented piezo injectors combine to attain engine improvements in all relevant areas: responsiveness, power, torque characteristic, efficiency and manoeuvrability. Advanced development has been primarily focused on further enhancing performance, alongside meeting the latest emissions standards by including a gasoline particulate filter (GPF). The new 911 also brings a new generation of turbocharged flat-six engines.
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