The starting speed has improved.This was the easiest to understand for me.
I also feel that the acceleration from driving around town (40-60km) has improved.perhaps··

What happens when you shift down when coasting with the accelerator removed or when you release the accelerator?shock?has been reduced and deceleration is now smooth.
I think the fuel efficiency and exhaust noise will be the same as before installation.

●Yamagata prefecture hot springs!(CX-8/KG)