Review on Silent Performance: Unleash the Power with MBRP M1004A Universal Quiet Tone Muffler by Lucas Hale

I, like many others, let my inner teen out when I decided to straighten my 2007 LBZ Duramax about 2 weeks ago. While this might have you smiling from ear to ear, reality kicks in real quick when you put your wife and 13-month-old in a pickup truck. After doing a lot of research, I decided that this would probably be the best choice. It was immediately noticed that this "tames” the rumble and loud rumble, which in turn pleased his wife. But you still hear a bit of that famous Duramax whistle at cruising speed and enjoy its full power when you really step on the pedal. 100% recommend this product.