The best answer for me.

● Installation parts: Premier tail muffler

One year after the car was delivered, the premium tail muffler was finally replaced because it was compatible with the 1S MT.I changed the muffler for the first time, but the first impression was that it was quiet enough to beat.
However, in terms of appearance, the diameter of the tail end was larger than I expected, and the balance with the signature style was better, so I thought it was good to replace it.

After driving for a while, it goes without saying that when the engine starts, as you say, I personally like the low sound of "Fluoro ..." that comes out when the clutch is met at the start.
With MT, I found one pleasure even in the situation where the start and stop were repeated during the troublesome traffic jam.
Also, it seems that the torque increased a little when accelerating to around 3rd speed immediately after starting, and I feel that the speed riding and the behavior at the time of acceleration became smooth.
When cruising, the bass sounds a little compared to the genuine one, but when accelerating the start and when blipping and downshifting, you can feel a clear change, and above all, the gentle bass as sung is heard, so replace it as a whole. I think it was good.
Probably, I haven't exchanged the muffler with my family, and I think it was the best answer for me because it didn't bother people and I could only understand it but was satisfied.
I also want to save money and replace the intake system next time.

● Kumamoto Prefecture Teru Teru Afuro (MAZDA3 / BP Gasoline 2.0L)