I have what I think is a custom exhaust that is really nice. You can hear the engine all the time but fairly subdued, not excessively loud but it still sounds very special at any speed. And when you step on it, it Roars just right. I thought to myself, I'd almost like it to be louder, but was assured by people whom I drop off, that Yes the roar is quite fierce sounding as I drive away, not obnoxious, but definitely high performance and not a cheap sound by any means. I had the car on a lift to change the oil, and took a few pictures so I'll share with you all. The welding looks very nice. I think the exhaust sound is perfect for the car. I have cars that are quite a bit faster than the 4200 coupe, but the Mase has so much personality.