Mercedes S550 2016 iflash It will lock the ECU

It will lock the ECU again and you will lose your tune/unlock

Please contact us with your VIN if you are unsure what motor your 2013 550i has

Tunes for specific octane

If the iDrive asks you to update your apps

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

Mercedes S550 2016 iflash It will lock the ECUExpertly 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