The optional Sport Chrono Package Turbo provides simultaneous enhancement for engine, chassis and optional Tiptronic S transmission.

Key features include a digital and analogue timer located centrally on the dashboard, a ‘Sport’ select button on the centre console, a performance display in the standard Porsche Communication Management (PCM), a personal memory function in PCM, and a special ‘overboost’ function unique to the new 911 Turbo.

When ‘Sport’ mode is selected, the engine management system applies a new set of variables creating a much more aggressive response. A modified throttle map relates the pedal position in the footwell to a wider angle of opening on the throttle. As a result, the engine has a much more positive reaction to every pedal input. In the higher gears, a hard rev-limiter helps protect the engine under power.

Under full acceleration, the ‘overboost’ function provides a temporary increase in available boost pressure of approximately 0.2 bar. The overboost is applied across the medium rev range, raising the standard 620 Nm of torque to as much as 680 Nm.

The modified throttle is matched by PASM, which also switches to ‘Sport’ mode. The dampers become firmer, enabling faster turn-in as well as better contact with the road.

On vehicles with Tiptronic S, the basic gearshift pattern is automatically switched to high-performance mode. The gearshift action is virtually instantaneous, while the shift points are timed for maximum acceleration. Lift off the throttle – even at high revs – and the system automatically shifts down to apply engine braking. There are no unwanted upshifts in manual mode when approaching the engine rev limit. Since the driver has control over every upshift, the handling of the car is smooth and assured, particularly when braking for a corner.

To minimise assistance from PSM, the trigger threshold for this system is raised. The result is a more natural and involving response to both lateral and longitudinal forces. Mid-corner agility is considerably enhanced, with greater scope for oversteer on turn-in and exit. This added freedom is particularly apparent in lower-speed sequences and bends. For even greater driving pleasure, the all-wheel drive system applies a greater proportion of drive torque to the rear.

For maximum manoeuvrability, PSM can be partially disabled while the car is still in ‘Sport’ mode. PSM simply monitors the forces acting on the car and will only intervene in the most critical of situations, e.g., when ABS assistance is required on both front wheels.

To help you quantify this increased performance, the Sport Chrono Package Turbo includes a swivel-mounted timer on the dashboard. Functions are accessed via the control stalk for the on-board computer. Analogue dials measure hours, minutes and seconds, while a separate digital field displays whole seconds, tenths and one hundredths of a second. The digital field runs in parallel with a second display which is conveniently located in the instrument cluster.

Individual lap times can be viewed, stored and analysed using a special ‘performance display’ added to Porsche Communication Management. Available information includes the time and distance travelled on the current lap, as well as the number of laps completed and the respective times. The system can also display the current fastest lap and remaining range till empty. Driving times can be recorded for any stretch of road and benchmark times can be defined. Other useful features include a memory function accessible via PCM. This can be used to store a range of personal preferences, such as daytime driving lights, ‘Welcome Home’ light function, air conditioning, rain sensor activation and door-lock mode.