i have a 2008 2500 with the 6. 7 cummins i bought it in january with 31000 miles and it now has 35000. since the day i bought it i have gotten a bad smell of diesel through the vents mostly whenever i come to a stop at a traffic light or something. it will also smoke front the right front wheel well i have looked around but cannot see where it is come from... . i have had it back to the dealer 6 times for this problem. 2 times ago they replaced the egr cooler and the tubes for it but it is still doing it! any ideas on what it could be!?... ... also if i ever get the time i would like to buya tuner for it and a 5 inch exhaust. any recomendations on what brand to buy?
thank you
chris
thank you
chris