I have had the borla 4 muffler system now for about 2 weeks. I love it! If you listen very carefully you will hear a slightly lower pitch when it goes to 4 cylinders. This is by no means a drone or objectionable. During normal driving the exhaust sound is maybe one or two decibels above stock. Wot is when it comes alive,and that's good, cause that's what I want, a dignified 5.7 liter hemi letting its will be known!!!

P.S. Get the volant injection with it, it puts the icing on the cake!!