Don't feel bad. I've been there also. It can be difficult to gauge how an exhaust behaves without listening to it in person. No exhaust manufacturer/seller is going to say their exhaust drones. It's something you learn to spot with experience.Like I said in my original post, feel free to poke fun! The car is 'loud' but really not too bad other than exactly what I described. Decel makes an awful noise and the exhaust pops are real gunfire. I wanted loud, but that part of the exhaust is over the top. I am actually curious if the ETS system has the same issues or not with the hemholtz.
The ETS system will drone less with the Helmholz, but it is still pretty loud. I heard one in person but didn't get to ride in it.