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First up to bat is American Porsche tuner Switzer Performance, which fitted a new set of Garret GT30R turbos, tweaked the ECU and replaced the exhaust system to the tune of 800 horsepower, which is all the more impressive considering that they achieved the figure running on regular old 93 pump octane.


With the Porsche Carrera GT long out of production and the anticipated roadgoing RS Spyder still a ways down the pipeline, the performance mantle in Stuttgart is held up buy the 911 GT2. Boasting 520 horsepower, 0-60 mph in 3.3 seconds and a 206 mph top end, that may be enough for some, but not for everyone. Not by a long shot. Following the Wimmer RS GT2 sporting a hefty 680 horses and capable of reaching 221 mph, two additional Porsche tuning houses have taken the roadgoing racer even further with upwards of 800 horsepower.


But if that ain't enough to satiate your super-Porsche cravings, along comes 9ff with an even more bonkers tuning kit for the GT2. The same firm behind the svelte, extreme GT9 supercar has taken the GT2 up to 850 horsepower, and has supplemented the extra boost with carbon fiber body panels and a downforce-increasing aero kit.


9ff claims its latest rocket sled will run up to 62 mph in three seconds flat and top out at a stunning 240 mph, but the gearing can be tuned according to the customer's specifications to either optimize acceleration even further or augment the top speed. It even looks nifty in Gulf livery. Follow the jump for a press release and video from Switzer, or click on the thumbnails below for a high-resolution gallery of the 9ff GT2.
via:autoblog