The 2017 Porsche 911 Turbo got horsepower upgrades pushing the zero-to-60 times to three seconds ... and lower. Photo credit: Len Katz.

The much-anticipated Porsche 911 Turbo and Turbo S models arrived on the floor of the Detroit Auto Show, displaying the tweaks that have them reportedly running zero-to-60 mph faster than ever.

Both the Porsche 911 Turbo and 911 Turbo S models received a bump in horsepower for 2017 that has the 911 Turbo S making the run in just 2.9 seconds while the 911 Turbo lags by just a tenth at three seconds flat. Both models are available in both coupe and convertible bodies.

The 3.8-liter twin-turbo six in the 2017 Porsche 911 Turbo will now make 540 horsepower, a 20 hp increase Porsche says was achieved by modifying the intake ports and switching to new fuel injectors that allow for higher fuel pressure.

The 2017 Porsche 911 Turbo S, meanwhile, jumps to 580 hp, while its maximum torque reaches 553 pound-feet in overboost mode, compared to 523 for the Turbo. The Turbo S also has a higher, 7,200 rpm redline – the Turbo topping out at 7,000 rpm. The S model gets the same new gear as the base 911 Turbo, as well as new turbochargers with larger impellers.

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Top speed on the new 911 Turbo now is set at 198 mph, a 2 mph boost. Photo credit: Len Katz.

The 2017 models now get what Porsche calls a “dynamic boost function” to improve throttle response. Among other things, under hard acceleration it maintains boost pressure even when the accelerator pedal is briefly released, as can happen when carving through sharp corners. Top speed now is set at 198 mph, a 2 mph boost.

Among other changes, “The chassis of the new 911 Turbo models with PASM as standard now offers an even greater spread between performance and comfort,” the maker said, referring to the Porsche Active Stability Management system.

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The Turbo S model is loaded with new features, including the maker’s Composite Ceramic Brakes. There’s also a lift system to raise the front axle by 1.5 inches to help clear obstacles when parking.

As with all other 911 variants, the Turbo and Turbo S models feature as standard the Porsche Communications Management system, which includes navigation technology. The navigation can access the latest traffic information in real time.

Routes and places can be visualized with 360-degree images and satellite images. In addition, the system can now process handwritten inputs. Moreover, mobile phones and smartphones can now be integrated more quickly, easily and comprehensively than before via Wi-Fi, Bluetooth or cable. Select vehicle functions can now be controlled remotely as well. As in the previous models, the Bose sound system is offered as standard; a Burmester system can be delivered as an option.

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The 911 enjoyed a banner year in 2015 in the U.S. The sports car icon recorded an increase over the previous year of four percent with just under 32,000 units delivered. “This growth, even in a year in which the model was changed, shows the immensity of fascination for the 911 on the markets,” said Detlev von Platen, Member of the Executive Board for Sales and Marketing at Porsche AG. The new 911 series will be available in the United States in March of 2016 with the flagship 911 Turbo models available in April.