So I have decided to take a leapnof faith and since I dont have the mechanical dextrixity needed to do further mods, I am going for the tune. I puchased the Cobb AP3 after reading lots reviews. My mods are minimal: KN filter dropped on stock intake and Ford Performance catback. I would REALLY appreciate good feedback and suggestions as I want to safely get the most out of my Fiesta.....Thank you.