Spy shots of the Porsche 991 Carrera S

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Performance numbers are out - The new 991 Porsche Carrera S would hit 100 km/h in just 4.5 sec with a top speed of 302 km/h

Autobild releases their spy shots of the Carrera S 991

New renderings were released over this weekend by a popular German magazine of the new Porsche Carrera S 991 modeled scheduled to be unveiled in September at the Frankfurt Auto show. Although it may appear that much of the car remains somewhat unchanged there are clear differences between this new model and the 997. What is claimed by the magazine is a definite increase in performance, stating that the Porsche Carrera S would hit 100 km/h in just 4.5 sec with a top speed of 302 km/h.

The silver images are leaked from Porsche - latest photos of the Porsche Carrera 991, and more than likely confirmed to be the production 2012 Porsche model.

Overall the Porsche 991 engine remains the same. What's shocking however is that the standard models are seeing a decrease in engine displacement to 3.4 liter engine. That being the same bore and stroke as that used in the Boxster and boxster s models. The wizards form Porsche have been hard at work and even though the engine has been reduced, with the addition of new cams and new exhaust the power output has been increased to 350hp.

The Porsche 991S models continue to use the 3.8 liter engine which now develops 400hp. additionally the rev limiter has been raised by another 200rpm topping out at 7800rpm. A much better power to weight ration interprets to some spectacular numbers that should easily trump the Porsche 997 0 to 60 times.

Although the Porsche folks are tight lipped we would expect the 991 Carrera S's time in the 4.5 sec mark with the regular 991 Carrera in the 4.8sec for its 3.4-litre car. This would interpret to some mind blowing times for the 991 Turbo models, estimating the manual transmission hitting 3.1 seconds to 100kph and the PDK shattering the 3 second mark and putting it in almost Bugatti territory at 2.9 seconds to 100kph.