Just put my Spintech side exhaust on. I also put on Hooker super comp full length ceramic coated headers with an off road h-pipe. I will post a sound clip soon. It is fairly loud at idle and crazy loud wide open. It has a hollow nascar sound to it. They are not as deep as my 2 chamber turndowns. The Spintech's are about the same loudness at idle and much more louder wide open over the 2 chamber turndowns. It has a very unique sound that I have never heard beofre on another stang.