Hi im from new hampshire I have a 2004 6.0 theyhave been very happy with for its power.I have a bobcat skid steer that I transport with it.I am getting a exhaust code right now.I get a heavy white smoke occassionally out of the exhaust and then will eventually work it way out.I have replaced the fuel filters and egr valve.I had the intake and Turbo cleaned in november.Any suggestions on were to start?