The 3.5L EcoBoost V6 doesn't have the overall sound volume as the 5.0L F150s, but more importantly, the 5.0Ls have a much deeper and throatier sound than the V6 trucks, which tend to have a higher pitch and turbo whine. If you want to hear a clip that's roughly equivalent, take a look at our 2011-2014 F150 5.0L Borla S-Stype vs. ATAK Sound Clip on our 2012 F150 5.0L, which should be much more equivalent to the 2015 F150 5.0Ls than the comparison between motors.