I had my Resonators deleted a few days ago, this is a very subtle mod to the exhaust system. Simply gives the 300C a muscle sound, when it first starts up it sounds real nice and at idle it sounds way cool. Sort of a deep base sound. Cruising at 60 mph and above there is no drone, if the radio is on you do not hear the exhaust at cruising. Local shop charged me a C note which included a short pipe each side to delete the resonators and a pair of 3.5 inch rolled tips which look real nice. I'm very satisfied with this mod,i'm sure it will pass the wife test, the 300C is no-where as loud as my Impala SS was with turbo mufflers on it.