MKB has just released their power packages for several Mercedes-Benz
AMG models. The packages are good for the Merc 500 V8 and the 5.5-liter twin-turbo V8 engines. The 5.5-liter twin-turbo V8 found in the Mercedes Benz CL63, CLS63, ML63, S63 and the SL63 AMG has been cranked up by the German tuners for an impressive extra 122hp and 221 lb-ft of torque. MKB claims a total output of 640hp and 738 lb-ft of torque.