This is great. I've always felt like there was something missing from my 2005 Toyota Camry, so I thought this would help, and it did! The sound is deep but not loud. I still drive like this, so I hope it will help me save fuel too. Power and fuel per gallon update == 7/17/2014 Okay, the car lost its low and mid power band and the fuel economy dropped from 31mpg to 28.5mpg. . Still sounds great, but I'm swapping it back to the factory muffler.