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Set to make their public debut at the 2016 Detroit Motor Show in January, here’s a first-look at the new, facelifted Porsche 911 Turbo and Turbo S models. With their Carrera cousins already out and running amok, let’s see what the range-topping 911 variants have to offer.

From the off, the 911 Turbo and Turbo S will be available in coupe and convertible body styles. Design-wise, similarities between these two variants and the base 911 Carrera and Carrera S are apparent, featuring similar front- and rear-end designs, save for a few unique 911 Turbo elements.

The front end of the car gets new side airblades and narrower LED front lights with double fillets, which present the 911 with a wider stance. New centre-locking 20-inch alloy wheels are standard, featuring seven double-spokes on the Turbo and 10 spokes for the Turbo S.

The rear end of the vehicle has also been given a rework, benefiting from new tail lights, a redesigned rear bumper and reshaped quad exhaust tips. Inside, the facelifted 911 Turbo and Turbo S welcome a new 918 Spyder-derived GT steering wheel and a newly-developed Porsche Communication Management Infotainment system as standard.

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Both 911 Turbo and Turbo S variants get an upgraded 3.8 litre biturbo flat-six engine that delivers 20 hp more in each car. The 911 Turbo pushes a total 540 hp, while the Turbo S deals a whopping 580 hp.

The newfound power results in a zero to 100 km/h sprint time of 3.0 seconds for the Turbo, and 2.9 seconds for the Turbo S. Top speeds are increased too, with the new Turbo now good for 320 km/h (five km/h more than before), and the Turbo S limited to 330 km/h (12 km/h more).

To match the new performance, the upgraded flat-six also promises greater fuel efficiency, with both Turbo and Turbo S coupe variants rated at 9.1 litres/100 km. Their convertible counterparts meanwhile promise 9.3 litres/100 km. All new 911s are equipped with a seven-speed PDK dual-clutch automatic transmission.

Porsche attributes the increased performance to the modifying of the engine’s inlet ports in the cylinder head, new injection nozzles and higher fuel pressure. The turbochargers also feature larger compressors.

The 911 Turbo and Turbo S variants both feature a new dynamic boost function that promises better engine response by maintaining charge pressure under load changes.

For example, when a driver briefly lifts the throttle pedal, the throttle valve remains open for momentarily longer. When the driver goes back to accelerator after the brief lift, no power delay is experienced. The effect is said to be more pronounced in Sport and Sport Plus modes than it is in Normal mode.

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The Sport Chrono Package now includes a Sport Response button at the centre of the drive mode switch. When pressed, the engine and gearbox is preconditioned to deliver the maximum possible responsiveness for up to 20 seconds — acting as a sort of power boost button for overtaking manoeuvres.

Similarly, the car’s handling and stability can also be sent into full attack mode at the single push of the PSM button on the centre console. The new Porsche Stability Management’s (PSM) Sport Mode is independent of the prevailing drive mode selected, and is ideally used for when maximum handling is quickly desired.

The Porsche Dynamic Chassis Control (PDCC) system and Porsche Ceramic Composite Brake (PCCB) are also included as standard. Optionally, customers of the new 911 Turbo and Turbo S variants will be able to specify a new radar-based lane change assist feature and a front axle lift system that can increase ground clearance by 40 mm at the front spoiler lip. Prices for the new 911 Turbo range from USD$159,200 (RM675k) to USD$200,400 (RM850k).