my problem with turn downs is the 450 or so hp I am making through a 3" exhaust... If I am on a dusty road, it looks like I have a leaf blower running under my truch.. And yes, it is quite loud in the cab ususally. But I didnt build the truck to sneak up on people //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif.. Wait til I get my remote dumps installed, then I wont have to do anything but flick a switch to run open headers.. No more crawling on the ground for me to open the dumps YAY!