http://www.youtube.com/watch?v=NiEVW...eature=related

This is what a standard BMW V10 sounds like. V10's generally aren't deep bass note engines they have a distinct howl and that video probably due to the camera has amplified the mid and high note of the exhaust. Eisenmann make probably the best exhaust systems for BMW period.

Listen to the contrast with this exhaust. Same by Eisenmann but slightly different setup

http://www.youtube.com/watch?v=gxNJF...eature=related