Need help with vacuum, Mystery pipe Options

[Lil-Joe101]

Can anyone tell me where this goes and possible post real time pictures. At the moment I have a min air filter on it. The vacuum from this is so loud and I need to know either where it goes or if I should just leave it as is with the mini filter on it.

[antoine64]

that is the air intake for the Idle control valve. it should be connected right after your filter but before the turbo inlet. it needs fresh air. When I got my car this hose was blocked off and linked to another vacuum line. the car idled like ****.

on the 3SGTE there are several things that need filtered air besides the main inlet to the turbo.

-the idle control valve
-the boost control VSV (unless you disconnected it and used an after market boost controller). this is the air source for bleeding the waste gate actuator to allow higher boost.
-one of the vacuum lines from your power steering pump. when you turn your wheels, a switch on the pump creates a vacuum leak causing a higher idle.
-the crankcase breather. That strange black box on the top of the engine. Sometimes people put little filters on this. don't know much about it. Mine has a dedicated hose attaching just after the filter.

all of these (except maybe the breather) feed air into the engine so filtering that air is a good idea.

Should you need pictures or a diagram I can provide it.

Hope this helps.