Which muffler do you prefer, one or two? What is the difference between the numbers?



Recently, in order to be conscious of the environmental performance, I have been intentionally using a muffler.
There are more and more car models with hidden designs at the tail end.

For the expression of sporty
A scarf is an important item.

Such a muffler.
Depending on the type of car, there are 1 or 2.

What is the difference depending on the number of trains?



From music (free music):
[Amacha no Ongaku Kobo] http://amachamusic.chagasi.com/