Measurements of the Akrapovic EC Type approval EVOLUTION system on the BMW S 1000 RR (without muffler insert):
Power & Torque: The power increase with the Akrapovic system is substantial, and can be seen from 5500 rpm right to the top of the range. At 13300 rpm we measured 189.4 HP, with a max. power increase of 9.1 HP at 8200 rpm. The system’s effect on the torque and power curve is huge and strongest at midrange rpm.