When I purchased the DJ Demio in 2015, I had your company's dual muffler installed as an option at the MAZDA dealer.
Therefore, I was satisfied with the design even though I didn't know what kind of effect it had.

In one program, I heard that increasing both the intake and outtake intake and exhaust volumes would lead to an increase in horsepower.
I immediately had a MAZDA dealer set up your company's intake suction kit and fresh air guide. I can really feel the acceleration from the XNUMXcc Demio at full throttle from a high speed of XNUMXkm and the steady increase in low-end torque on XNUMX-degree slopes.The excitement and fun of the Demio has doubled.

Mr. Shimomura, Miyagi Prefecture (Demio/DJ)