Ok guys, Ive been a 7.3 buff for a while and dreaded having to change BUT i broke down and bought a 2004 f350 King Ranch crew cab 4x4 with 6.0 automatic with 155,000 mles. the down pipe was changed by dealer before I purchased it due to being cracked. I know the 6.0 have a rep of having some problems. My question IS: What do I need to do to reduce any problems I may have?? I live in Kansas so emissions is not an issue.