Silvia Club of NSW

Hello !

I am in the process of swapping my CA18DET into a S13 SR20DET.
And i just had a question about this thing we really dont know what is, and thought maybe someone could help.

http://home.no.net/waldez/200sx/sr20det/Motor%20003.JPG

If you take a look at the picture, you can see the ting with the two rubber pipes coming out of it, one going into the exhaust elbow.
What is this really? I have heard someone thought it was something called AIV, and it does no ggod so i can really just rip it away? This just messes up my intake manifold?

Thanks
Kjetil Riisnes