MERCEDES AMG GT63S 4.0TT Sam delivered this menacing looking GT63S AMG 4.0TT to us for a custom Etuners ECU calibration. Factory quotes 470kw at the engine and this AMG delivered a baseline of just under 400kw to the wheels. After a Custom Etuners dyno tune the power curve is incredibly strong...
Read moreMercedes GT63S 4.0TT – Stage1 98RON
