Well the site was down, and my home pc crashed, I'm on the laptop. I proceded with the purchase hope it gives me better reliability than the POS 6.0 I had. I managed to trade for a fair price, or atleast I'm happy. The dealer told me the 7.3's get better mileage, is that true. I should get somthing, the new truck has some mods. An AFE intake system, and a 4" cat back exhaust. How would I find out if it has been chiped?