Originally Posted by Jack ffr1846
For my Lotus, they are absolutely functional. The bottom of the car is completely covered with flat aluminum panels for airflow management and downforce. The horn (single) is an anemic little bugger and where do they put it? Inside of the front area behind the air difuser that guides air from the mouth to the radiator. It's completely boxed in by the aluminum underneath. From inside the car, if the radio is on, you literally cannot hear the horn. Outside.......barely. With such a small car (hello Suburban piloted by soccer mom on the phone), it's often not seen. It needs to be heard.
What exactly are you trying to accomplish with your horn? They are only for alerting nearby drivers and pedestrians. Not to be heard blocks away as there are regulations that automakers must meet. In your case I can see possibly a case for them with such a small car with a poor horn as you say but the people with Subaru's are kidding themselves if they think this is anything more than an appearance mod.