BMW 540i 2021 iflash and a more exhilarating driving

and a more exhilarating driving experience by delivering usable power through improved throttle response and torque management

We will ship you our DME cable and provide personal assistance from one of our staff members

Top speed limiter removal (CPC required in some cases)

AMS ECU TCU & OBD Tune

This addon is for build date 06/2020+ BMW ECU's that are locked

BMW 540i 2021 iflash and a more exhilarating drivingExpertly 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