i always thought it was more about sound control(deadening) you're right tho... no offense and and none taken... its all good... you're just trying to help, thank you bro...
No problem.
The sound control is part of what the manufacture is trying to do, which is why factory intakes/air boxes/tubing are so restrictive. In the case of the Si, it is actually designed to produce a noticeable intake sound as well as pull in some cooler air.