有人這麽認為，至少我覺得有道理。
Removing the resonator does 2 things, it turns the interior airflow from laminar to turbulent flow and it decreases the resonant frequency effect which means that you not only get less airflow, you also decrease the overpressure delivered to the valves at the rpm that the resonator is designed for (which in a R18A1 is probably 3000-4500 rpm).
It does open up the airflow at higher rpms from less restriction, but probably not enough to counteract the last 2 problems which means you'll get a "swirling" intake sound, lower midrange power and most likely the same, or very, very slightly increased power that can also just be attributed to the standard deviation of error between dyno runs.
Resonator removal is almost always a bad idea unless you can model the fluid dynamics yourself and design/fabricate anew one for the targeted rpm range you want more power at (which in all likelihood would be 5000-6500rpm since that's really the only place it would be able to improve anything measurably, though not substantially).
The only other reason for resonator removal is in the case of forced induction or other major engine intake mods (like a new head), at which point you probably wouldn't have a stock intake anymore anyways.
DIY: Removing the Intake Resonator
