I had the same problem w EBC.. 120 to 20 and smoking.. one stop. let alone warping rotors and the source of my huge vibration issue. i think the shuttering is what ruined all of my bushings etc.
Matt @ RavenMS had mine smoking and totally discolored the front rotors with the uber braking "knocking off the glazing"
SOLD - 03 RS6 Avus (905355)
Current - 03 Toyota Tacoma 4x4 double cab - the YETI, lifted, winched, snorkeled, lockered, skidded, geared