Reviewed By Michael G (Bennington, VT) Reviewed for a 2012 GMC Sierra —7/10/2014 4:43 AM
This system is perfect for me. Loud when you get on it, but quiet while cruising down the road. There is absolutely no drone in the cab. I have noticed that my gas mileage has increased by about 1mpg since I have bought it, not that I bought it for that reason.