My impression after installing the Premier tail muffler is that the noise level isn't an issue at all.
At idle, it's not noticeable even at midnight. Response has improved considerably.
Actually, I was curious about the diesel's response from the moment I got in the test car, and it was so bad that I even considered adding a throttle controller.
With this change, the throttle response has improved and the throttle work has been significantly improved.

Also, because of this, the rear load feels a little lighter. This may be a phenomenon unique to diesel.
To be honest, when it comes to diesel, the volume is the same as the normal one, and the sound quality has improved, so I think it would be better to equip it with a premium muffler as standard equipment.
It was worth the conversion.

●Denta from Tokyo (MAZDA3/BP)