I am a first time diesel owner, and looking for some insight. I bought a 2006 f250 king ranch. The body has about 235,000 miles on it, but it has a new motor (has about 3500 miles on it). It already has new studs, and EGR delete. I also just ordered an s&b intake, and a 4in hbrp turbo back exhaust. I was thinking about getting the SCT X4 as well. I want better fuel mileage, and to still be able to play around and go fast when I want. Am I missing anything else? I dont want to spend a bunch of money and tear anything up. Any other suggestions on what I should do to make this a long lasting, good running truck? Thabks in advance.