I have filmed a BMW M4 F82 fitted with Akrapovic titanium exhaust and tuned to 600hp by PP-Performance. Video shows the M4 roaring nicely as it does a series of noisy revs and a burnout in the middle of the road! Subscribe! http://bit.ly/SubscribeToMarchettino Facebook: http://on.fb.me/Marchettino Instagram: @Marchettino Twitter: http://twitter.com/MarchettinoYT