The KLEEMANN V8 boost kit for 55 AMG Kompressor motors includes a complete crankshaft pulley, high flow air filters, an ECU upgrade and installation hardware. Boost pressure is increased over stock levels to produce more horsepower and torque. High flow air filters reduce pumping losses in the air boxes allowing for free breathing. An ECU upgrade is performed to properly calibrate fuel and timing delivery, as well improve throttle response and lift the VMAX. Power gains are 45 hp and tq across the entire RPM range.