The German tuning shop provides dyno measurements to back its claim, but doesn’t explain how the result is supposed to be superior to what Opus Automotive achieved last spring. After a range of extreme tweaks and improvements, the AMG GT Coupe pictured here was able to hit the dyno stand with 1,066 metric horsepower and 1,127 Nm of torque. This puts the Stuttgart supercar above even the Bugatti Veyron with its 1,001 PS.

The tuning necessitated outfitting the stock 4.0-liter V8 with new turbos, ECU, exhaust system and other components. In its factory form, the engine maxes out at 734 PS and 850 Nm of torque. However, you would have to buy an AMG Anniversary Edition to take advantage of it.

Once tuned by Renntech, the car sprints to 100 km/h in three seconds flat, shaving 0.2 seconds off the standard time. The top speed rises even more remarkably from 325 to 352 km/h. Aside from the engine boost, the full tuning package offered by the company includes carbon-fiber aerodynamic parts, an internal roll cage and forged wheels.