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To a large extent, the 3.6-litre boxer engine is identical to the power unit used in the Porsche Mobil1 Supercup and the international Carrera Cup championships. Power output has increased by 20 horsepower to now 440 hp (324 kW) at 8,000 rpm. Maximum torque is up by ten Nm to 430 at 7,250 revs per minute. The power increase results from optimised engine electronics and a modified exhaust system. In contrast to the GT3 Cup, the body of the Cup S is not based on the road-going GT3 but on the GT3 RS.
The 997 Sport Classic is a limited edition version of the 997.2 Carrera S coupé inspired by the 1973 Carrera RS 2.7. The engine is rated at 413 PS (304 kW; 407 hp) and features a newly developed resonance intake manifold with 6 vacuum-controlled switching flaps. It includes a 6-speed manual transmission, double-dome roof (informally called double bubble roof), 44 mm (1.7 in) wider rear fenders, SportDesign front apron with a front spoiler and a fixed 'duck tail' rear wing. Only 256 were made.
Porsche refers to it as a new generation, even though the internal chassis code 997 remains unchanged. The 997.2 therefore is more of a mid-term facelift with some significant technological changes. Notably, the water-cooled flat-six engines get direct-injection technology, and a seven-speed, dual-clutch transmission replaces the previous five-speed Tiptronic automatic while the shift-it-yourself option remains a six-speed. Base Carrera coupe gets 339 bhp and 287 ft lbs and a 0.3 second faster 0 - 60 mph time of 4.5 seconds. Top speed now 179 mph. A nice update indeed.
In recognition of the 50th Anniversary of the Porsche Club of America (PCA), Porsche has created an exclusive 911 Carrera' S Coupe model featuring a distinctive exterior color, unique interior styling and commemorative touches, and a more powerful and higher performing engine. Limited to an exclusive production run of just 50 cars initially made available to eligible PCA members, the 911 Club Coupe was unveiled this past weekend at PCA's 50th Annual Porsche Parade in Hershey, Pa.
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.
Paying homage to the first Porsche model that bore the name Speedster – the 356 Speedster – the production run for the new model is limited to 356 cars. The two-seater is significantly different from the other members of the 911 family. In the best tradition, the 60 millimetre lower, more raked windscreen, the flat contour of the sporty-look manual hood, and the characteristic double-bubble hardcover for the soft top define the striking profile of the new 911 Speedster. This makes the body of this rear-wheel drive with its 44 millimetre wider rear stand out even more.
The 997 911 GT3 RS is an even lighter and more purist version of the 911 than the regular GT3. 20 kilograms lighter than the GT3 and equipped with a close-ratio six speed manual the GT3 RS gets to 60 mph 1/10th of a second faster than the GT3. The 911 GT3 RS is 44mm wider at the rear than the GT3. The wider track helps improve directional stability when cornering. Weight savings can be found throughout the car. The Clubsport version there is a bolted roll cage, a six-point harness for the driver and a built in fire extinguisher. 
For 2009, engine power is distributed to all four wheels via the same electronically controlled Porsche Traction Management system found previously only on the Porsche Turbo. The electronic controls respond to driving conditions even more instantaneously than the previously used hydraulically activated all-wheel drive system. The Carrera 4S model, with a 3.8-litre engine developing 355 bhp, can go from 0 to 60 mph in 4.5 seconds and has a top speed of 185 mph.
The 997.2 Turbo was introduced for the 2010 model year and received a new 3.8 litre engine capable of 493 horsepower, a significant evolution as compared to the 473hp in the 997.1 Turbo. The 997.2 Turbo was available in both manual and automatic transmissions, but the automatic evolved from the Tiptronic used in its predecessor, to a sportier dual-clutch PDK. Approximately 3,300 coupes were produced and 1,800 cabrios, far less than its predecessor. An epic all-around GT with more performance than you could ever need.
Like the rest of the range the Carrera S Cabriolet got a new 997.2 generation update. Not much is new on the outside, but the design refresh did give it a revised front bumper and larger air intakes, as well as by new large mirrors and the bright strip of LEDs below the headlights that serve as daytime running lights. Inside the car, there's a new communication management system, PCM 3.0 which includes a new touchscreen feature, is standard on all 2009 and onward 911s.
The Carrera 4 Cabriolet was released with the rest of the 4 and 4S models as 2006 model year cars. With a sure-footed, four-wheel drive powertrain as well as that "wide-body" stance, and with tops that open or close at the touch of a button, the Carrera 4 Cabriolet really started to make the case it could do it all. The wide look gave the 4 a widened track, larger wheels and tires and four-wheel-drive powertrain that gives more dynamic stability, especially in inclement weather conditions. Developed at the same time as the coupe.
While the 997 Carrera 4S coupe sold a healthy 15,056 units between 2006 and 2008, the equally exciting Carrera 4S Cabriolet sold 12,587 units, making it a pretty popular 997 model. The reason is pretty simple. It had a gorgeous wide-body stance, all-wheel drive traction and that potent 3.8 L Flat 6 that was good for 350 bhp and 295 ft lbs of torque. The first convertible 911 that was as good a performer as it coupe siblings with the added benefit of open top driving in the summer with the comfort of being a great daily driver all year round. 
The Cabriolet version of the new Porsche 911 Carrera 4 GTS is just as potent as its coupe sibling. It combines a 408 hp 3.8-litre flat six engine with intelligent all-wheel drive that delivers a further exhilarating dimension to the dynamics of the iconic rear-engined sports car. The 911 was first offered with four-wheel drive in 1989 and the drivetrain has been a popular option ever since. Now, the 911 Carrera 4 GTS broadens customer choice in 2011, building on the success of the two-wheel drive Carrera GTS that went on sale in December last year. Carrera 4 GTS power unit is the 3.8-litre flat six with power kit.
Along with its sibling Carrera 4, the 2005 Carrera 4S offered an all-wheel-drive system for the Porsche 911, but unlike the 4, the 4S gets the Carrera S' more powerful engine and it turns out that makes a big difference. The Carrera 4S was the more powerful and more dynamic version of the 997 Carrera 4 and an overall great sports car, especially for those in colder climates who need the safety of all-wheel traction. All rounder that fits nicely in the 911 lineup as perhaps the most practical.
In the case of the 911 Carrera 4S Cabriolet that begins with a larger, more potent six-cylinder engine. The Carrera 4S is powered by a 3.8-liter flat six that produces 355 horsepower and 295 lb.-ft. of torque. The roughly ten percent increase in power translates to improved acceleration and higher top track speed. The 911 Carrera 4S Cabriolet with the six-speed manual gearbox races from a stop to 60 mph in only 4.7 seconds, topping out at the track at 185 mph. When carrying the optional Tiptronic S transmission, the zero to 60 mph sprint takes a mere 4.5 seconds.
The 997.2 Turbo was introduced for the 2010 model year and received a new 3.8 litre engine capable of 493 horsepower, a significant evolution as compared to the 473hp in the 997.1 Turbo. The 997.2 Turbo was available in both manual and automatic transmissions, but the automatic evolved from the Tiptronic used in its predecessor, to a sportier dual-clutch PDK. Approximately 3,300 coupes were produced and 1,800 cabrios, far less than its predecessor. An epic all-around GT with more performance than you could ever need.