M139 WMI Kit

The Weistec M139 Water-Methanol Injection (WMI) System is engineered to enhance the performance and reliability of the Mercedes-Benz M139 engine. By lowering these temperatures, the system also increases knock and detonation resistance, allowing the engine to operate more consistently and safely, particularly during performance driving or in demanding conditions. This WMI kit helps to improve the overall consistency of the M139 engine. While the exact horsepower and torque gains can vary, this system is estimated to provide an increase of 20-80 HP at the engine. The advertised gains are calculated estimates based on engine performance metrics.