Track st202 celica 2.0 gt non turbo

Hi there,
I'm currently preparing this celica for track ! and was looking for some tech infomation on the induction side i'm going to fabricate an air inake pipe but first need to firgure out the various pipes connected to the intake pipe, Ill attach some pictures so it's clear on the items i need to Identify 2 are obvious air intake temp sensor,and the big one is the intake noise reduction link,

Now the other two i'm a litttle lost on, one of them goes to the throtle body and the other to a vac pipe which goes to a valve could anyone shine some light on either of these ! hope the pictures attach ok

cheers