Porsche expanded its mid-engine range with the new two-seater Porsche 718 Boxster GTS and Porsche 718 Cayman GTS. The vehicles' power has now been increased to 269 kw (365 hp) thanks to a newly developed intake duct and an optimised turbocharger for the 2.5-litre, four-cylinder boxer engine. With these improvements, the engine delivers 11 kW (15 hp) more power than the 718 S model and up to 26 kW (35 hp) more power than its GTS predecessor models with naturally aspirated engines. The new mid-engine sports cars are available with manual six-speed transmission or optional PDK
The GT2 RS's reputation as the most powerful street-legal car is as monstrous as this comprehensive guide. Suffice to say, this supercar has been built with the best Porsche has to offer. It's not bragging, it's just facts. There is no doubt that the new GT2 RS is the pinnacle of the 911 in terms of performance. It is simply the fastest 911 in history, and that’s a fact. It is the quickest production car to lap the Nürburgring Nordschleife. It is the most powerful 911 ever made.
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.
To the untrained eye, the Carrera T may appear to be a bare-bones and sparingly equipped 911 at first glance. The purpose of the T is to create a driver-focused 911, equipped with only the necessities required to appeal to those of a purist’s ilk. The Carrera T employs the same power plant used in the current base Carrera - a twin-turbocharged 3.0L flat-six with 370 horsepower and 331 lb-ft of torque. A 7-speed manual transmission comes standard with the T, along with a shorter final-drive ratio and the limited-slip differential. Porsche Sport Exhaust (PSE) is also standard. PASM sport suspension comes standard in the T, which lowers the chassis by 0.4 inches relative to the base Carrera and allows for two modes of dampening.
Four years after the introduction of the Cayman S, the sportier version of the mid-engine sports coupe Porsche was refreshed. It was even faster and could carry more cornering speed. The facelifted version of the Cayman S offered a completely enhanced package. From the exterior to the interior, from the engine to the gearbox and suspension, it was reworked. The engine was kept at 3.4-liter displacement, but due to its new direct-fuel injection system, the power was increased by 25 hp over its non-facelifted version.
Porsche made a lightweight version of the Turbo simply known as the Tuubo S. This used the spartan appointments of the Carrera RS with an upgraded version of the Turbo engine. Some cars received graphics on the side celebrating IMSA Supercar Championship. Similar to the Carrera RS, the Turbo S had no power steering, air conditioning, airbags, central locking, alarm system, rear window wiper, smaller window washer reservoir, smaller horn, and had thin-gauge glass. The engine used a second oil cooler and slightly higher boost to improve overall performance.
The 2007 model year Boxster got a change that most people don't think is significant, but is. Model year 2007 is when the base Cayman joined the 987 lineup. The interior and exterior remained mostly the same, but the Boxster S received the Cayman S 3.4-liter flat six while the 2.7 in both the Boxster and new Cayman received VarioCam Plus, which bumped horsepower up to 245. Think of this model year as Porsche taking the changes to get the base Boxster 2.7 to the same level as the recently introduced base Cayman. 
The 1989/90 change of model year saw the launch of the Porsche 911, 964 series onto the market. This 911 model was initially available as a Coupe, Targa and Convertible. From model year 1991 onwards Porsche also introduced its top-of-the-line model - the Turbo - into this series. In spite of bearing a major similarity in terms of look to the naturally-aspirated model, the extended wings remained. This meant that the new Porsche could retain its turbo look. The 964 Turbo model was the successor to the Porsche 930. The 964 Turbo was the end of an era, the last of the single turbo rear-wheel drive 911 Turbos.
A single car - the 911 GT1-98 Straßenversion - was built in 1998 to homologate the all-new racing version under the new FIA regulations. The engine had to be slightly de-tuned to meet European emissions laws, although its 400 kW (544 PS; 536 hp) at 7,200 rpm and 600 N⋅m (443 lb⋅ft) of torque at 4,250 rpm proved to be more than adequate; the car could accelerate to 100 km/h (62 mph) from a standstill in 3.6 seconds on its way to a top speed of 193 mph.
It's not often Porsche creates an all-new model in their 911 lineup. But the 997 Carrera GTS is just that. It's faster, more powerful and better looking than any other model in the Carrera family. However it's still a little less hardcore than the 911 GT3, and a lot cheaper than the 911 Turbo. The Porsche 911 Carrera GTS features a 3.8 litre flat-six engine which is tuned to develop 408 horsepower, that's 23 hp more than the Carrera S manages. Think of it as the perfectly optioned Carrera S for less money.
In 2015, Porsche announced the car we all thought Porsche would never build. It has been a few years since it has been released and the excitement It was the first time Porsche introduced lets the motorsports guys in Weissach sprinkle their magic on a Cayman. With components sourced from the 911 GT3, an engine carried over from a Carrera S and a tweaked and tuned chassis, brakes and aerodynamics, Porsche’s engineers did their best to produce the perfect mid-engine sports car for road and track use. Compared with the standard Cayman, the GT4’s chassis was lowered by 30mm and bigger brakes were added, with many aspects of its suspension carried over from the 911 GT3. Some serious motorsport kit. One of the best ever.
Of all the 1580 Carrera RS 2.7s, only 200 were made were ordered with this lightweight ‘Sports’ trim which made the car more responsive and purposeful. In many ways these few cars were the ultimate road-going Porsche of the 1970s. Known as the Sports, Lightweight or even the M471 option code, these cars had improved the power-to-weight ratio. Reports of 75kg were stripped from the standard model by fitting lightweight body panels and lightweight glass.
Revealed at the 1972 Paris Auto Show, the Carrera 2.7 RS was a special model used to homologate the 911 in Group 4 racing. Developed from the 911S, the 2.7 was more potent in almost every area. Compared to the standard Carrera, the 2.7 RS featured a larger engine, wider flares to accommodate the Fuchs alloy wheels, stiffened suspension, larger brakes and a ducktail rear spoiler. The Touring outsold the Lightweight, with a total of 1380 units built (the Lightweight had only 200 units).
The Cayman GTS arrived a s 2014 model year car and boy was it special. It featured a marginally more powerful engine, a new body kit, new 20-inch Carrera S wheels, new Bi-Xenon headlights, and a new sports exhaust system. The Cayman GTS is longer than the Cayman and the Cayman S by 30.5 mm (1.2 in) due to its bumpers. The new, optional passive sport suspension allows the Cayman GTS to have a 20 mm lower ride height compared to the Cayman equipped with standard passive suspension or 10 mm lower compared to one with the standard-equipped PASM. Power was 330 bhp @ 6700 rpm and 0 - 60 mph was a brisk 4.1 seconds.