[ecoswag1990]

Just to clarify. The V8 mustang has a "sound tube" in the engine bay that amplifies the engine sound coming into the cabin, some ppl have been removing them just to clean up the engine bay but haven't noticed any difference in sound. The ecoboost mustang uses the speakers to emulate the sound that ford thinks you would want to hear based on your RPMs. It is relatively easy to pull the fuse and disable the feature.