I also installed your company's ram air intake, so I replaced the intake and exhaust system and installed it to improve the exhaust efficiency.

There are many mufflers for FD3S, but I installed this muffler because it has a straight structure, the volume is not explosive, and it is of course compliant with vehicle inspection.
In terms of looks, the tail diameter is not too large, but I like it because it claims to be a sports muffler.

Compared to the stock muffler, I like the sound quality, as it sounds like a rotary as the engine revs up, as if it were "filtered".
Personally, I feel that the rotation in the high rotation range has increased faster, and the torque has increased, making it easier to ride.

-Hokkaido Miyakoshi-san (RX-7/FD)