I am new to this sight but not to the 6.0. I have an sct x3 and one thing I don't like about it is when I set cruise. If you start going up a small hill the truck over fueles and speeds up a couple mph. Then it slows down a couple mph under where I originally set it. I like the extra power but I like being able to use cruise. I am thinking that if I just used a ficm tune instead I won't have this problem. I am thinking about sending it in and getting the ficm 40 from php. Who is running a ficm tune out there and what do you all think ? The truck is just a little too sluggish stock for my liking.