im a new diesle owner,i own a 2008 f-350 king ranch bought a few years ago. my cleaning exhaust code keeps coming on and truck blows the whiteish blue smoke , im just allarmed it is happening a little to much, truck went in 2 years ago for radiator recall and they relaced egr at that time also.i have plans to install a flo-pro 5' exhaust , cold air intake, and poss. a spartan tuner. Any comments or suggestions on anything i have mentioned would be greatly app. Or any ideas on the best thing to do to obtain the best performance and fuell milleage.