9ff BT2 Porsche 911 GT2 – Click above for high-res image gallery

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.

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.

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.


Switzer Announces GT2 Porsche Tuning PKGs to 800HP

Oberlin, OH - 2009 has been a busy year for Switzer Performance. In January, Switzer's thousand-horsepower, 9-second SLEDGEHAMMER project car introduced the world to the Ohio-based tuning house, which followed up its debut act in February when a number of Switzer's customer cars run 10 second 1/4 miles in 700 hp fully-automatic 997 turbo Porsches. March saw the introduction of Switzer's Nissan R35 GTR performance upgrades, good for up to 800 hp on 93 octane pump gas.

This week, Tym Switzer is introducing his latest customer-ready performance packages for Porsche's outstanding 997 GT2. The new GT2 packages range from a simple software revision to Switzer's comprehensive flagship offering: the $39,000, 800 hp GT2 PKG shown (installed) in these pictures. "This 800 horsepower pump-gas package has evolved from those first SLEDGEHAMMER builds," explains Tym, "but unlike the SLEDGEHAMMER, which used a stand-alone system, we've been able to keep the factory DME, making this a true bolt-on package. Everything else that went into the SLEDGEHAMMER builds is in this package, running on pump 93."

Switzer's 800 hp GT2 package makes use of custom Garret GT30R-based turbochargers with custom billet compressor wheels on ball-bearing center sections in lightweight stainless turbine housings. Switzer's upgraded turbos compress massive amounts of air, while generating heat than the stock units - heat which is channeled to the engine through Switzer's own MONSTER intercoolers. The engine itself is fed air and fuel through larger injectors and a custom intake plenum with an oversized throttle-body. All this hardware is managed by the stock ECU, running Switzer-specific DME software calibrations. Perhaps the most controversial part of Switzer's package, however, is the exhaust system. Switzer's GT2 exhales through a GT2-specific version of the company's existing 997 TT exhaust. "As much as we would have liked to stick with the GT2's titanium canister, there was just no way to hit our power goal on pump gas with the stock system. It was just too restrictive and not designed to handle this much airflow."

Switzer's stated goal for the GT2 project was 800 crank horsepower on 93 octane pump gas with an efficient, linear power curve that efficiently put power to the ground and didn't punish the driver with sudden spikes in torque and power. One look at the final dyno results reveals those goals have been met. "We were very happy to hit our target numbers, of course, but the best part is that the car is still so manageable on the street, at this power level. It is an everyday hyper-performing exotic, and I can't wait to get it out on the track and see how it performs in the hands of a pro driver."

The Switzer Performance 800 hp GT2 Porsche package is available now through Switzer Performance dealers.

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