Anybody with experience on turbocharged engines can tell you the importance of a good flowing exhaust for more torque, increased HP and improved response. Equally important is a tough sound with clean exhaust note (no rasp!) and no cabin drone. Full-Race's 3" Cat-Back FreakOBoost exhaust for 2011, 2012, 2013, and 2014 Ford F150 3.5L V6 Ecoboost trucks does just that: it's silent at idle, stealthy at cruising rpms and has a throaty growl under boost and wide-open-throttle. 100% handmade in the USA from 3" stainless steel, this mirror-polished catback has no drone or rasp associated with small displacement engines with oversized mufflers, while increasing flow compared to the highly restrictive stock 2.5" exhaust.