As for Active Engine Brake, I assume it just reacts better to your foot lifting off the gas pedal.When, in an emergency, you apply the brake pedal quickly and with force but without really further increasing brake pressure, Dynamic Brake Control (DBC) instantly builds up maximum brake pressure, bringing your BMW more quickly to a halt.
Jerkiness depends on how they program it to work and that's definitely not a characteristic wanted here nor is it required for sufficient braking. Actually quite the contrary, this system is primarily for smooth braking. Do some research and you'll see.An active engine brake sounds confusing to me and I'll definitely need to try it out to see how it reacts. Reducing speed faster when you're off on the accelerator pedal or something. That would increase jerkiness wouldn't it?
1. Read through the procedure and find a suitable, safe and legal area to perform the necessary stops.
2. BEFORE starting the break-in procedure, drive with gentle braking. Do not use brakes aggressively until completing the break-in procedure.
3. Make a series of 15 stops from 50 to 5-10 MPH. At the end of each stop, immediately accelerate to 50 again for the next stop. Run all stops continuously in one cycle. (For Track use you can replace the recommended stops with 10 stops from 60 to 5-10).
4. During the 50 (60) to 5-10 MPH series of stops, the exact speed is not critical. Accelerate to approximately 50 (60) and begin the braking cycle. KEEP YOUR EYES ON THE ROAD AND APPROXIMATE YOUR SPEED AT THE END OF EACH CYCLE.
5. A moderate braking effort is needed to properly bed-in the rotors and pads. A stopping force of approximately 0.8G’s, or just short of ABS intervention is the level of pedal effort you are trying to attain.
NOTE: BEFORE COMPLETING THE BREAK-IN, DO NOT COME TO A COMPLETE STOP WHILE THE PADS AND ROTORS ARE VERY HOT! THIS WILL TRANSFFER PAD MATERIAL NON-UNIFORMLY ONTO THE ROTOR, CAUSING A VIBRATION DURING FUTURE USE.
Accelerate to 35 mph and apply moderate brake pressure to reduce your speed to 5-10 MPH
Repeat this process 3-4 times, the goal is to warm up your brake pads
Now turn up the heat even more by increasing your speed to 45 mph and braking down to 10 mph
Repeat this process 3-4 times
Pro Tip: It’s important to avoid coming to a complete stop during this stage as it’s possible to melt brake pads against hot rotors.