So I'm underneath the new to me 27 Roadster and I see this strange exhaust bypass valve with a cable running off it which comes up under my floorboard. It seems to vent exhaust straight out through three small differently length pipes. Sort of like a miniature pipe organ. What in the world is this all about
put this in your search box:
aermore exhaust whistle
press enter, and read some of the "hits". May not be that brand, but you'll get the information you desire
I believe it to be an exhaust whistle
More likely a Jereco or similar type if it has just three tubes. Do they come out at a right angle?