I have some dumb questions I want to run a tuner to gain better fuel economy, not to much worried about gaining a whole lot of power the most I tow is about 7K pounds. My truck is out of warranty 101,000 miles and as of yet all has been good no major problems just a couple of injectors. I have read that the SCT is the best tuner for the 6.0 but I also hear running a tuner is more likely to blow a head gasket is this true? If I run a low tune will it still cause this problem? Also how do these hook up to the truck do I plug it into my trucks computer and what gauges will I need?