It is clearly lighter than normal.

-Installation parts: Premier tail muffler, exhaust chamber kit

There was no problem even if the muffler was genuine, but I found the exhaust chamber kit and was curious, so I installed it at the same time. (It's said that it's in stock ...)
So, I'm not sure if it's the effect of a single part, but the feeling when stepping on is clearly lighter than normal.
The mileage is about 10 km, so it may just have been refreshed.
If you pay attention to the fuel efficiency, it will not be so bad.
The volume you care about is a diesel car, so if you expect too much, you will miss the beat, but if you are a pure car lover, you will notice this change in tone.
Even in a residential area, if you drive slowly, it is almost the same as the genuine one, so you can rest assured.
However, it changes to a sports muffler during DPF regeneration. (Laughs) It's cool.

The effect of the exhaust chamber is not well understood. I felt that the tachometer behaved differently when I turned it to around 4 to 5000 rpm.
By the way, if you check the tail side after having the muffler replaced, the power is huge!I suddenly heard a voice.

By the way, the picture of the lift was taken by the dealer when I had "another part" installed.
I will post it if I can afford it.

● Miyagi Prefecture Rabbit without knowledge (Atenza / GJ Diesel 2.2L)