Just bought an '07 STX ext. cab. I do a lot of highway cruising for the job. I am curious about a couple of things, understanding more about "good" fuel vs "cheap" fuel and making for a longer lasting engine and second, some suggestions for performance upgrades such as intake and how the chip upgrades work. I figure an easier breathing and good performing engine will make for better gas mileage and more power, and of course a more exciting road trip