Check out this very loud sounding Audi S4 B8 fitted with a custom Armytrix exhaust system doing LOUD revs and accelerations! The exhaust sound of this Audi S4 B8 is definitely awesome in our opinion! What do you think?
This Audi S4 B8 is probably one of the loudest Audi S4's we've ever heard! It is fitted with a custom Fi Exhaust which produces an epic sound, especially witht the valves open! This video includes the very loud Audi S4 B8 revving it up with valves closed and valves open! Enjoy!