The stock . 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, . have improved this super saloon by applying their performance software, which the tuner claims unleashes the true potential of the car.
By . 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 . can now reach 60mph (96km/h) from a standstill just 2.79sec , which makes it 0.11sec faster than the .. 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, . have dropped a short video that shows just how fast their Merc' AMG E63 S really is.