Installed these on my 2015 Dodge Charger RT Plus today and was able to hear the car sound in the shop. The sound never gets old. I fell in love with the sound the moment I turned it on. The best sound is achieved at 4500 rpm. They require everyone's attention. They are very affordable and only took about an hour and thirty minutes to install. Also, I haven't noticed any hum except when mds:4 cylinder mode is on. Even a little rumble sounds great. Don't waste your time with Super 40 or 44. You won't make anything louder, so go for Super 10, trust me. I was on the 44th series and wished I'd stopped on the 10th. The 44 is good, but the 10 took the car to a new level of wonder. Can't wait for them to break down to sound deeper. Pros: Great muffler at a great price. * Easy to install * Aggressive muscle sound. overcome it