That's shitty ass quality. IDC that they added a aftermarket airbox. So what if they might have bummed the wire, slightly tugged on it putting the airbox in. That should not happen unless you grabbed it with both hands and yanked on it. I hardly doubt that happen simply putting in an airbox...
Holy shit 12 mpg? lol damn I have to beat on mine a good bit to get it down to a little over 15. Mixed driving is usually 17 or so. And when I baby it up to 19 around town. LTH cold airaid intake Gibson exhaust and tuned 432 to the wheels