performance information after replacing the exhaust system and a few other cosmetic modifications:
M550d F10 Series 80-200 km/h:
17.5 sec
M550d F10 Hartge 80-200 km/h:
15.2 sec
M550d F10 MM-Performance.pl 80-200 km/h:
13.5 sec
MM-Performance.pl :
Hartge :
http://www.youtube.com/watch?v=m0vM4lVfnqo&hd=1