Dang, I completely missed the Flowmaster booth at SEMA, but this video covers it all











Found on http://www.onallcylinders.com/2015/12/01/sema-show-n-tell-an-overview-of-flowmaster-mufflers/







via Raymond Arsenault on Life and Business http://raymondarsenault.blogspot.com/2015/12/dang-i-completely-missed-flowmaster.html