It’s always fun to watch a car get strapped onto a dyno and watch it jerk about like a beast that’s itching to get out of its shackles. In some ways, it’s an appropriate metaphor to use, especially if the car in question is a 2016 Mercedes-AMG GT S. On its own, the AMG GT S->ke4853 is capable of producing 503 horsepower and 479 pound-feet of torque, allowing it to sprint from 0 to 60 mph in just 3.7 seconds to go with a top speed of 193 mph. Seems impressive, right?

But, those numbers come at the expense of not having a tuner like Hennessey in the picture. With the aftermarket company getting its hands on the AMG GT S, well, that’s what this video->ke278 is for.

Check out the car trashing about as it’s being run on the dyno. It looks surreal, doesn’t it? That’s what dynos are for to begin with, and while we’re at it, listen to the roar of that 4.0-liter V-8 engine. If that doesn’t send a little chills down your spine, then I don’t know what it’s going to take.

The result of Hennessey’->ke1863s dyno test on the AMG GT S was shown at the end of the video and the numbers speak for themselves. From the standard output of the Mercedes->ke187 sports car,->ke506 the American tuner was able to squeeze out an extra 50 horsepower and close to 100 pound-feet of torque, bringing the output to around 550 ponies and 566 pound-feet of torque.

The American tuner hasn't announced the full details of its HPE600 program for the Mercedes-AMG GT S. But, with the dyno test seemingly out of the way, expect an announcement to arrive sooner than later.

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