BRABUS offers the largest range of safety-certified performance upgrades and increased-displacement engines for Mercedes-Benz vehicles worldwide. The power unit engineers from Bottrop have now developed another tuning level for the Mercedes E 63 S 4MATIC+. Generating even more power required modifications to the hardware of the engine peripherals. The BRABUS performance kit includes two reconfigured BRABUS high-performance turbochargers, which in addition to a larger compressor unit also have a modified core assembly with reinforced axial bearings. They generate a maximum boost pressure of 1.6 bar. The development included calibration and endurance tests on state-of-the-art stationary engine test benches as well as extensive testing on the racetrack and in traffic. All these tests were used to recalibrate the mapping for injection, boost pressure control and ignition, which is introduced into the engine control unit by an auxiliary control module, as well as to achieve the flawles