I did the brake burnishing at about 500 miles. 1 - 40 to 20, 1 - 60 to 20 and 1 - 80 to 10 back to back. And then drove home and let the brakes sit all night. The brake dust was tremendous the next day when I checked the wheels. I have not really noticed any difference in the braking but I have not had to really brake very hard since.
Walk softly, carry a light saber and drive a ZL1!