I was at the supermarket today and heard something unexpected. If you had blindfolded me I would've sworn I was listening to a jet aircraft passing by me! Turns out to be a Furd super duty. I had to find out about this. Turns out the guy has a 5inch exaust with no cats, or mufflers, and an upgraded ball bearing turbo. The thing whined just like a turbojet! Now I want a diesel just for that sound!!!!