A video by Shockerracing.com showing before and after exhaust sounds along with the install of a Remus Race Exhaust Rear Silencer with 84mm Twin Pipes.
Judging from the new 7 Series BMW is presenting here, BMW EfficientDynamics is available in the entire, line-up, from the BMW 1 Series straight to the top of the line-up in the BMW 7 Series.