We just jumped over to Leonberg, Germany, for one of our regular visits to the shop that’s fast becoming the foremost Porsche tuning werks in this strident era of company closures. We needed a thorough taste test of the 711-horsepower TechArt GTStreet RS. Exaggerating only a touch, about the only thing on this GT2 RS-based blue meanie that is fully original from Porsche AG—or not matte finish or bathed in Alcantara—is the rear-view mirror. At least that’s certainly the impact it makes the first time it fries our retinas.

Shown officially for the first time at last September’s Frankfurt Motor Show, this particular $675,000-ish GTStreet RS will eventually make its way into the roped-off garage of a very enthusiastic car nut in China. Either that or this King of Beijing could just as well leave it in Europe in order to avoid the massive import fees and taxes and bribes that are part and parcel in China. Not to mention the still difficult Chinese infrastructure and traffic behavior that makes enjoying any potent Porsche such as this to the max impossible.

From the already respectable factory standard 612 horsepower on the 500-unit limited edition car, TechArt’s “TA 097/T2.2” tune bumps that up to 711 hp—a 16 percent bump. Then for torque, we skip from 516 lb-ft up to 664 lb-ft, or a wrenching 27 percent increase. This German premium tune job creates no less than a racing Weissach wagen for the street, something for which this entire area around southwest Germany is renowned.

But the TechArt GTStreet RS—despite this particular client’s unfortunate color obsession—sweetly stays as traditional as people this damned passionate about the 911 would like by sticking with the factory six-speed manual from Getrag as set up, of course, for the shortest possible throws between ratios. And then untouched is the war-like single-mass flywheel that doesn’t stop rattling in its cage until we get the clutch pedal to the floor. That TechArt clutch, still about 9.1 inches in diameter as on the stock GT2 RS, has had its surface altered and hardened even further to deal with the geometrically greater stresses of launching this beast.

So OK, first off, it’s blue. Right down to the paintjob on the Clubsport half rollcage. Sky Blue according to the creators. We won’t give in to the temptation to use the terms “Smurf” or “Otter Pop” or even cotton candy. You all can go right ahead and refer to the blue in one of these hues, but we would never stoop so low and risk taking anything away from the exceptional qualities of this car. Besides, Smurf Blue would be darker and there’d be a little white floppy cap on the roof.

When we took off several times from a standstill, the immediate physical sensation was feeling all the skin on our face move toward the back of our neck in a fantastic demonstration of acceleration g-forces at play. We would have launched many times over, but this blur-inducing moment got us even more addicted to lighting up the 20-inch Michelin Pilot Sport Cup+ tires (245/30 front and 315/25 rear) wrapped around forged TechArt Formula Race wheels at 8.5 inches wide in front and 12 inches wide in back.

The already unbelievable handling capabilities of the stock GT2 RS are rendered almost impossible to conceive, what with the 3.2 inches of added track in front thanks to the TechArt Formula Race wheels offset, the 4 additional inches at the rear axle and the new springs all around that lower the chassis 0.4 inches. Having a closed, decommissioned airfield near Stuttgart at our disposal, the 2.6 turns lock-to-lock of the Alcantara covered steering wheel could be experimented with non-stop, frequently in ways you just can’t pull off on public roads. On the slightly porous yet smooth surface of this tarmac, it was nearly impossible to make the GTStreet RS lose its concentration on the current line of travel. Eerie thoughts of invincibility crept in all too quickly.

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