BMW 328xi 2014 Stage:Stage 2 All the instructions are in

All the instructions are in the box

We recommend a one-step colder spark plugs for better performance

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

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

If you ship it via Overnight

BMW 328xi 2014 Stage:Stage 2 All the instructions are inExpertly 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