It was installed on a 2000 Nissan Maxima with Injen Technology RD1935BLK Race Division Black Cold Air Intake. The muffler shop installed a pipe 2.5 inches from the back of the cat and attached this muffler. The sound is deep, not raspy. A good product. https://www.youtube.com/watch?v=craNwwrmg64&feature=youtu.be