Check my videos in the gallery testing my lauch control. The exhaust on my car is Blitz Nur Spec R, coupled to a custom 3" front and 3" flexi.
Gives you an idea of the sound.
I personally find it a little too loud at times especially on cruise. Drones a bit, but then I could always fit the baffle, which really does quiten it down, at the expense of a little power and response.