Join Date: May 2006
Location: Charlotte, NC
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"Fresh Air Duct" Removed
I can honestly say, I don't know where the hell the air box draws it's air in from. This "fresh air duct" as it is labeled by DCX is not only blocked by the closing of the hood, but sealed by the weatherstripping placed in front of it.
So I pull it off and toss it in the back, leaving the battery exposed and the rectangular duct on the airbox, now drawing in hot engine bay air.
Despite the heat soak, the engine seems peppier and the sound is more prominent. Sounds like a vacuum cleaner at the lower RPMs, the higher RPMs don't seem to have changed in pitch, just volume.
No check engine light or anything.
Also, the "fresh air duct" has a small inlet inside of it where it dumps into a resonator chamber, this is the NVH (Noise, Vibration, Harshness) crap I was talking about previously.
It's so freaking siimple to do this mod, just twist the two plastic retaining screws on the battery cover/"fresh air duct", pull up and towards the front and your done.