Posaidon has just become the latest tuner to unveil its range of modifications for the Mercedes-AMG GT and GT S.

As you’d expect, the tuner has focused its energy on the twin-turbocharged 4.0-litre V8 of the German sports car. Typically, the AMG GT pumps out 462 hp and 600 Nm of torque while the range-topping AMG GT S delivers 510 hp and 650 Nm. The Posaidon Mercedes-AMG GTRS lifts those figures to 700 hp and 750 Nm.

Mercedes-AMG GT rear

The gains have been achieved thanks to modified turbochargers, a larger intercooler, bespoke exhaust with free-flowing motorsport grade catalytic converters and some ECU tuning. The 750 Nm of torque figure can be limited if requested by the customer but as standard, is limited to ensure the longevity of the seven-speed dual-clutch transmission. Posaidon also offers its customers the chance to permanently deactivate the start-stop feature.

Thanks to the horsepower and torque increases, the Posaidon Mercedes-AMG GTRS will accelerate to 100 km/h in a mere 3.2 seconds as well as a 349 km/h top speed.

“The 700 hp beauty: POSAIDON GT RS 700

There is no doubt that Mercedes-AMG has scored a direct hit with their gorgeous AMG GT/GT S, whose classical sportscar proportions of a long bonnet and short tail are just the start of its attractions.

The heart of the AMG GT is the 4.0-liter bi-turbo V8 (M178) engine developing 462 hp and 600 Nm of torque, while the motor of the GT S version makes 510 hp and 650 Nm. These outputs rapidly thrust these cars to 304 km/h and 310 km/h respectively.

For POSAIDON however, even the AMG GT S is just the starting point of something far more exciting. Enter the POSAIDON GT RS 700, offering a full 700 hp, accompanied by 750 Nm of torque.

While POSAIDON has the technology to raise the maximum torque figure well beyond 750 Nm, this peak number was imposed for longevity reasons in line with the factory recommended torque limit for the AMG SPEEDSHIFT DCT 7-speed dual clutch transmission. This electronic torque limitation can be lifted upon written customer request.

Given a perfect standing start, the POSAIDON GT RS is capable of slashing the 0-100 km/h sprint to just 3.2 seconds. But with rear-wheel-drive only, full performance is best experienced from a rolling start. Either way, the stupendous torque will pin you to your seat until the speedometer shows 349 km/h.

To generate this level of power and torque POSAIDON applies its in-house turbocharger upgrade and increases the intercooler capacity. A bespoke exhaust system featuring free-flow motorsport grade catalytic converters connects directly to the revised turbochargers, and helps to lower backpressure.

ECU mapping for the engine and gearbox is carefully calibrated on both the chassis dynamometer and the street. With the modified turbochargers building more boost pressure at lower revs and maintaining it as engine speed increases, the 750 Nm (limited) peak torque is delivered on a plateau almost across the entire engine speed range, while horsepower rises progressively with engine revs.

On request, the standard start-stop technology can be permanently deactivated. POSAIDON also offers its radar speed trap warning system that integrates into the factory COMAND Online navigation system.

A Youtube-Video showing the POSAIDON GT RS is available under the following link: https://youtu.be/dmOoomy33Fw


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