Subscribe! http://bit.ly/SubscribeToMarchettino - I have fitted my new Armytrix exhaust on my BMW M3 and well, this might be now the LOUDEST M3 ever.. what do you guys think?! Instagram: https://instagram.com/marchettino Facebook: http://on.fb.me/Marchettino Twitter: http://twitter.com/MarchettinoYT Song: Erik Lund - Summertime (Vlog No Copyright Music) Music promoted by Vlog No Copyright Music. Video Link: https://youtu.be/E338aF6QHu8