Software development for the current BMW M550d xDrive (G30/G31) is finished. From now on, we offer a stage 1 software performance upgrade for the 3.0 liter straight-six engine with quadturbo technology. The engine power of the M550d increases from 400 hp and 760 Nm to powerful 470 hp and 850 Nm of torque. The additional power of 70 hp and 90 Nm is available for 1.699,00 € in all mcchip-dkr bases.