View Full Version : odd protrusions from stock air intake tube

09-03-12, 12:59 AM
Does anyone know what they are for? There's a U shaped one that points downward and a large bulge that can be seen on top. Are they to modulate air intake sound quality? Noticed it when I put in the airaid. Thanks.

09-03-12, 01:00 AM
You've got it. Those are resonators to dampen intake sound.

09-03-12, 05:01 PM
PeteK has it correct. They do a great job in sound cancelation, but sure mess up the volumetric efficiancy of the intake flow.