We have developed a software upgrade for the Mercedes-AMG E53 4MATIC+ (W213) which is now available. The new turbocharged M256 straight-six engine ensures in combination with an additional electric compressor for a dynamic responsiveness without turbo lag. The mild hybrid technology with 48-volt electrical system supplies the ancillary units and the integrated starter generator. The recuperation of the battery works also via the additional electrical system. The 3.0-liter engine with dual turbocharger charge provides in stock condition 435 hp and 520 Nm of torque. An additional 22 hp and 250 Nm are available for a short time thanks to the EQ boost starter generator. Our carefully developed Stage 1 software optimisation delivers significant performance gains for the Mercedes-AMG E53 with Bosch MG1 engine control unit. We achieve powerful 488 hp and 600 Nm of torque. The EQ boost function is completely retained, so that 510 hp and 850 Nm are possible for a short time. Of course, this performance upgrade is also available for the E53 4MATIC+ Coupé (C238), Cabriolet (A238), T-model (S213), CLS 53 4MATIC+ (C257) and GT 53 4MATIC+ (X290). Further information can be found in our vehicle database.