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The Targa 4 GTS gets Porsche’s a powerful non-turbo rear-mounted flat-six engine with 430 bhp @ 7500 rpm and 325 ft lbs of torque from 5750 rpm, driven to all four wheels via Porsche Traction Management. Performance is also enhanced via the standard Sport Chrono package, which provides faster throttle response and more aggressive shift mapping. In addition, the GTS benefits from Porsche Active Suspension Management - Porsche’s proprietary adaptive suspension system with continuously variable dampers. Mechanically, this is the perfect package for a daily 911 that is also performance focused when you need it to be.
So what else do you get when you buy a 991 Carrera 4 GTS Cabriolet? First of all you get a  30 hp bump over the Carrera 4S to 430 hp from the 3.8L naturally aspirated flat-six. You get forged centre-lock black 20-inch wheels, dynamic engine mounts, the Sports Chrono Package, PASM adaptive damping with a lowered ride height, an interior swathed in Alcantara, a sinister front fascia with black intakes and custom rear apron with black tailpipes that broadcast the goods through an uber-nasty sport exhaust system. Other trim details include black lettering and smoked headlights.
Porsche will only build 30 examples of the Clubsport 25. Mechanically, it's similar to the regular GT2 RS Clubsport. It makes the 691 horsepower from a twin-turbocharged 3.8-liter flat-six. But it gets many, many changes to the exterior and even the cooling system. As you can clearly see, the body has been lengthened, and it has also been widened. The latter is necessary to house the wide, low-offset 18-inch wheels taken from the Porsche 935, though without the aerodynamic covers.
Like the rest of the GTS lineup, the 991.1 Carrera GTS Cabriolet is essentially a kind of 991 Greatest Hits package, hand-picking some of the more desirable components and options from the 911 range.  It gets Porsche's PASM (Porsche Active Suspension Management), Sport Chrono with Sport Plus, the Sport Exhaust system, and a ride height that's roughly four-tenths of an inch lower than non-GTS models. It also gets a version of Porsche's 3.8-liter flat-six with 430 hp, hits 60 mph in 4.0 seconds equipped with the PDK (4.4 to 60 mph for the manual), and tops out at 189 mph.
The GTS coupe starts with the wider Carrera 4 body, with the rear fenders pushed out 1.7 inches, and the rear track widened 1.6in. Up front is the new SportDesign front fascia with its lower front spoiler and larger cooling air intakes. Standard wheels are 20-inch center lock items and 0.5 inch wider than standard Carrera S rims, finished in satin black. There are splashes of black elsewhere, too. The changes run more than skin deep. Bigger turbos pump up to 18psi of boost pressure which helps deliver not only 30 extra horses at 6,500 rpm, but 405 lb-ft of torque between 2,150 rpm and 5,000 rpm, up from 368 lb-ft. This is the sweet spot.
Porsche is celebrating their 70 years in the making with the Porsche 911 Speedster Concept car. With the Carrera Cabriolet 4 body as its canvas, the Speedster concept pays homage to its predecessors - most notably, the Porsche 356 1500 Speedster. The limited production Speedster is immediately distinguishable from the current 911 line-up, with its “double bubble” tonneau cover and other unique offerings and design tweaks.
2019 911 speedster
Make no mistake that the Speedster is an absolutely fitting conclusion to the 991-generation. The Porsche 911 Speedster is an ingenious amalgamation of the latest technologies on offer, and the more simple ingredients that have been a principle of driving enjoyment since the invention of automobiles. A 502-horsepower engine, without turbochargers. A modern transmission, with just one clutch. A state-of-the-art suspension and chassis, with an unsullied purity. The list goes on. Perhaps the only drawback is that the Speedster’s rarity and price.
The 500 hundred numbered 911 Turbo S Exclusive Series cars cross the 600 hp mark with their 446 kW engines. The power increase does not make much difference performance wise, but it is good to know you have more than 600 hp. Similar in acceleration and top speed to the ‘regular’ Turbo S, the car reaches 200 km/h (124 mph) in 9.6 seconds (0.3 seconds faster than the regular Turbo S). The car comes standard with the Turbo Aerokit and roof panel made of carbon-fibre reinforced plastic.
The switch to turbocharging delivers predictably faster acceleration, with 0 - 60 mph taking just 3.9 seconds with the PDK transmission and Sport Chrono optioned. The quarter mile is dispatched in 12.2 seconds and the top speed for the open top Carrera S is 190 mph. These numbers are pretty impressive for an open top 911 that is just as comfortable driving around town as it is on back roads on spirited runs. With the 991.2 Carrera S Cab, it can be argued that there is no real need dynamically to opt for. the coupe body. A great overall sports car that is fast, fun and happens to have no roof.
The 991.2 generation Carrera range update was a big one. The base coupe looks about the same, but under the hood Porsche did something crazy. Gone is the 3.4 liter naturally aspirated flat 6, replaced by a 3.0 turbocharged flat six. The good news is that the new engine is pumps out 370 hp and 331 ft lbs of torque, a big leap over the previous generation (output is up over the previous car by 20 horsepower and 44 lb-ft of torque). Inside, the updated 911 hasn’t changed dramatically, and although Porsche’s new PCM infotainment system is faster and more intuitive to use.