BMW M3 Competition 2021 Stage:Stage 1 and Heat Shielding

and Heat Shielding

(For example: If you send in your ECU via Ground shipping

If the iDrive asks you to update your apps

We recommend new spark plugs every 20K miles

Dodson Billet Second Gear

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