2009 - 2012 Mercedes Benz S350 W221 OM642 3.0 - Performance ECU Tuning M52 allowing you to flash and

allowing you to flash and tune without issues:

ensuring flawless performance for vehicles equipped with the M176

If the original ECU is damaged beyond being able to read out data

2008 - Mercedes Benz - W251 R320 CDI OM642 Diesel

The results came out amazing

2009 - 2012 Mercedes Benz S350 W221 OM642 3.0 - Performance ECU Tuning M52 allowing you to flash andPerformance Flash Tune for 2009 2012 Mercedes Benz S350 3. 0 OM642 with EDC17CP10 ECU. 2009 2012 S350 W221 CDI OM642 Diesel Stage 1 tune +30WHP +40WTQ at the wheels. Performance tuning modifies torque limiter maps, boost levels, fuel maps, and more. All to help safely increase HP TQ, while keeping good drive ability and factory fail safes limp protection in place. Factory emissions remain functional and are not disabled. Gains can vary on vehicle