after that phone call let us all know what shop he works at so we dont take our trucks there.........over and above the bad things you can do to pumps and injectors from doing that why would you want to make your truck smoke simply to smoke its one thing if its smoking cause its got power and your foots on the floor but for it to just smoke driving thru a parking lot that just creates more librals and enviornmentalists to cry for more emisions laws just my 2 pennies