Reviewed By Michael B (Memphis, TN) Reviewed for a 2013 Ford F-150 —9/1/2015 6:18 AM
Throaty without being obnoxious, a little drone at lower RPMs - but great at highway speeds. Cool to hear the turbos whine through the exhaust, sounds "diesel-ish"
Reviewed By Rocco D (PECKVILLE, PA) Reviewed for a 2012 Ford F-150 —8/31/2015 8:34 AM
Crappy shipping. pipes loose in oversized box, not wrapped or even stuffed with filler paper, so some pipes and muffler dinged and gouged. Instructions not overly detailed, but enough to get by if you have half a brain. Sounds good, kinda like a car, but thats an Ecoboost.
Reviewed By CUrt C (EAST PEORIA, IL) Reviewed for a 2010 Ford F-150 —8/28/2015 4:07 AM
Purchased the American thunder for my Ford F-150 and love the sound. Haven't been able to keep my foot off of it enough to see if there is an increase in mpg . Have felt a difference in throttle response when towing especially. Not too loud in cab but enough, wouldn't want anything louder.