Mercedes S550 2012 Stage:Stage 1 DME Tuning’s ECU software for

DME Tuning’s ECU software for the BMW 535i is guaranteed to give you MORE of a good thing

We recommend one-step colder spark plugs for better performance

We will ship you a My Genius handheld device which requires a Windows 7+ computer to pass files in between

The turn around time is 1 week since the DME has to be sent to Europe for unlocking

Mercedes S550 2012 Stage:Stage 1 DME Tuning’s ECU software forExpertly calibrated and meticulously refined, DME Tunings ECU software is guaranteed to give you MORE of a good thing. More horsepower, more torque, and a more exhilarating driving experience by delivering usable power through improved throttle response and torque management. With additional ft. lbs. of torque through the mid range, acceleration out of your favorite corner and onto the straight is noticeably quicker throughout the rev range. DME