At the Fiat 500 weekend I also made a bit of a video of a Fiat 500 Abarth with a 695 cc engine and all the Abarth parts it needed to be a (very) fast car. It also sounded great and that's why I made the video. I'm thinking that the double exhaust pipes helped a bit.
Just click the link http://www.youtube.com/?v=S5YKd_TJ-8A
Enjoy. I know I did
*edit* Pump up the volume on your stereo when you watch this