German tuner Performmaster is ready to take the Mercedes E63 AMG beyond the 700 PS mark courtesy of a new software optimization program.

German tuner Performmaster is ready to take the outgoing Mercedes E63 AMG beyond the 700 PS mark courtesy of a new software optimization program.

It looks pretty much stock on the outside because all the efforts were made under the hood to squeeze more power from the reputable AMG engine. The twin-turbo 5.5-liter V8 no longer develops 585 PS (430 kW) and 800 Nm (590 lb-ft) as the PEC Tuning-Module has bumped these figures to 702 PS (516 kW) and 1,000 Nm (738 lb-ft) of torque.

There’s no word about acceleration times, but surely it’s now way faster than a standard E63 S which runs the 0-62 mph (0-100 km/h) journey in 3.6 seconds (+0.1s wagon). We do know Performmaster removed the 155 mph (250 km/h) electronic top speed limiter to enable the high-performance sedan hit 199 mph (320 km/h).

If you would rather wait for the all-new Mercedes-AMG E63, you should know that it won’t be out until 2017 or so and will make the switch to a twin-turbo V8 4.0-liter engine. In its highest state of tune, the motor will likely offer around 580 PS (426 kW) and chances are the model will be offered only with a 4MATIC all-wheel drive system.

We will get an idea about the new E63 once Mercedes will unveil the standard E-Class (W213) sedan next month in Detroit.

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