BMW X3M Comp 2021 Stage:Stage 2 We also recommend changing your

We also recommend changing your spark plugs and Primary O2 sensors every 15k miles

Requires ECU to be mailed in

Top speed limiter removal (CPC required in some cases)

shipping costs for sending an ECU to and from DME Tuning is the responsibility of the purchaser

BMW X3M Comp 2021 Stage:Stage 2 We also recommend changing yourExpertly 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