Acv
 

Is it supposed to make funny noises when revving? Listend to it under the hood, and it sounds like ... umm... a hamster being thrown into a meat grinder :)

An ACV making noises?? Hmm ive never heard of the AVC making noise, you know i heard my freinds airpump the other day and it sounds exactly like what your describing, and plus the ACV is pretty close to it so i think it might be your airpump. Did you disconnect the tube from the airpump to the airbox?? Cuz you start to hear the airpump a lot more if that hose isint on.

Nope, its connected pretty well. Not that it bothers me. But it might bother me if I fail emissions next year ;)

Thats wierd man then i have no clue how it would make noise like that but hey you never know with FC's

well try pulling the hose off and see if it gets louder

BAH nuts to ACV. Unless you have too pass a visual you don't even need it to pass emissions. I have all of my emissions removed. Once a year I put back on both cats/airpump and then run a hose from the airpump down by the turbo into the main cat. Worked just fine ;)
Oh and the airpump can make some funky noises.

So wait, i can have the air pump go directly to the cat?

see if the gasket is set properly... it might be blocking air making noise like that...

Did that dump hose with the funny muffler come off. That thing is so retarded.. lol Or, am I thinking of the wrong valve?

Please.. dont say the word emmissions. I need to pass them next month.. BLAH!