I've owned the truck over a year now. Always owned Chev trucks (this is my 6th) First Diesel truck I've had and love the power and MPG. I have H&S MiniMaxx chip, cold air, and FloPro exhaust front to back duel exhaust. Just curious, the truck will roll a bit in the warmer weather when I walk on it to pass or race with someone but when im idle or in colder weather you won't even see a sign of black. Is there any delete's or add on's for the truck to make it roll more or am I looking at getting bigger injectors or more expensive jobs for this?