BMW M3 Competition 2021 Stage:Stage 1 and Heat Shielding

and Heat Shielding

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

Transmission Tune

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

We recommend new spark plugs every 20K miles

BMW M3 Competition 2021 Stage:Stage 1 and Heat ShieldingExpertly 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