The mugen use the standard rubber arm which does have ripples inside.
When there's a combustion, energy is released and needs to go excavate, that's free energy, compare to when the air is intaken. This isn't my opinion, it's fact. It was even said so on a Honda video, I think it was omnimans 200whp b16a when he was talking about valves.
There's a huge difference installing a 70mm butterfly TB compared to a tapered 60mm>70mm TB. On a 1.6 or 1.8, you'd loose power, with the tapered you gain power.
The comptech system has a reducer when it connects the intake arm to the TB creating a tapered design. As well as the additional velocity stack at the end of the tube and a another massive stack at the end of the ice box.
This intake was proven to make the most power compared to AEM and injen 3" cold intake pipe, peak and especially mid range torque and HP. Most of all, it generated the most gain per RPM.
I chose this intake because it works on a 1.6 and give plenty of headroom for 1.8 or 2.0L.
My power graph showed it developed max whp @ 9000rpm stock internals after tuning of course. I don't think I'm loosing power.