So i was looking at making a cold air intake again, and i noticed a wierd empty black box that sits on top of the fuel rail and branches off of the tube running from the MAF to the throttle body. I asked a guy at the performance shop i was at what it was and his best guess was that it was an intake silencer, similar to an exhaust resonator. I figured, anything you can do to smooth airflow will help performance, even if only marginally, and who wants a quiet intake??? So i popped it off today, no check engine light, nothing wierd, just a little bit more sound from the intake (i think) and maybe some tiny increase in performance. I'd say no more than when you replace the airfilter with a new clean filter. But, its free, except for the $2 plug and the tiny bit of silicone i used so i think its worth the effort.
If perchance im wrong and this is something that shouldnt be removed, someone correct me, but as far as i know now, it seems kinda pointless. Here is my writeup...
http://homepage.mac.com/joshking/PhotoAlbum14.html