The stock Mercedes-AMG E63 S is pretty impressive as it stands, with 604hp and 627lb-ft (850Nm) of torque, and a 0-60mph (96km/h) sprint made in just 3.3sec.
However, Renntech have improved this super saloon by applying their performance software, which the tuner claims unleashes the true potential of the car.
By modifying the throttle mapping, boost mapping, and ignition timing, optimizing air-to-fuel ratios, and increasing the rev limiter, the tuner has made the engine deliver an impressive 773hp and 778lb-ft (1,055Nm) of torque at the crank, and 665hp and 669lb-ft (907Nm) at the wheels.
Renntech's tuned E63 S can now reach 60mph (96km/h) from a standstill just 2.79sec , which makes it 0.11sec faster than the new Porsche 911 GT2 RS. The 0-100mph (0-160km/h) sprint takes 6.61sec, and the quarter mile run is completed in 10.88sec, at 129mph (208km/h).
Despite choosing not to release an extensive image gallery of their latest product, Renntech have dropped a short video that shows just how fast their Merc' AMG E63 S really is.
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