I entirely agree on the Powerstroke emulating the sound of a crapsman tool box being thrown down a flight of stairs, then the remains being tossed into a wood chipper as it idles. No matter how pretty or reliable they could get that damn Powerstroke, I could not deal with the ridiculous sound it makes. As far as the smell goes, all diesels pretty much smell horrible, but ironically I find the smell less offensive to a gasser? weird but true??? I don't know what it is that makes one diesel engine smell different from the next aside from catalyst equipment, but those 6. 0 Powerstrokes smell like an old 6. 9 engine or something fierce **yuck** I honestly can't smell my Cummins idling uless I get a face full of it from the tailpipe. The Duramax, again I don't care how quiet it is, it still sounds too much like a gasser for my taste, it doesn't even sound like a diesel in reality. I think it's good to quiet diesel engines down to the new ISB levels, but I think there is a limit to, too quiet I. e. the Duramax which has no character IMO?
-Ryan