Hey, Devin! Throw up an intro for yourself over in the New Members Intro subforum, we'd appreciate it:
http://www.ecoboostperformanceforum.com/index.php/board,14.0.htmlDo you have any warranty on your truck? Is it Ford or aftermarket? As long as major damage is not caused, dealers/Ford tend to honor warranty on breakdowns.
New or used, you should always have a known starting point before you tune or add mods. With used, it is advisable to get fresh fluid in everywhere: engine, transmission, PTU, RDU, cooling system, and ideally, the brake system. Check/empty the intercooler. Get new spark plugs in there. Then let it prove itself to you over the course of 500-1000 miles. I would datalog during this time, just to have a baseline. Check the plugs at the end of that 500-1000 miles to verify the truck is running properly.
Then if all is going well, load up a tune/thermostat/CAI/downpipes/exhaust. With the trucks, the CAI has a relatively major impact on performance, so definitely worth it. Keep datalogging to get an idea of how your truck is performing. An upgraded intercooler is also available for the trucks, and will be worth it.
Post up your datalogs if you want extra eyes on them. Don't hesitate to ask questions.