We would like to inform you that we have the opportunity to unlock and program Mercedes MD1/MG1 engine controllers in OM656, OM654, M139 and M156 engines. The cost of unlocking the controller about 450-500e. It is necessary to leave the car at our place for a week at the most or send the controller to our address. After unlocking it is possible to perform modifications such as stage1..., AdBlue, DPF, EGR, Flaps, Cat, Lambda, P&B.