Before modifying the 2012
Mercedes-Benz E63 V8 BiTurbo, Road Test TV took the car for some quarter mile runs, with the bone stock E63 chalking up 12.06 seconds at 116mph. After RENNtech had their wicked way with the V8 BiTurbo's ECU, the E63 laid down an impressive 11.15 seconds at 126.7mph. And that was in soaking wet conditions with the temperature at around 80 degrees Fahrenheit.