RB20DET is this critical?

[BoostFab]

how critical is the piece connects to the charge-pipe by the throttle body. i'm going to put in a front facing plenum soon, do i need to incorporate that with the new plenum? maybe eliminate it totally. see the picture below.

[gawdzilla]

depends what that pressure line leads to... however, pressure is pressure so as long as that line still sees pressure (before the TB) you can tap it from anywhere.

[goofynick6]

That line feeds the idle things...so w/o it hooked up your car will not run right at all..

[Spazz]

to verify what nick says its the IAA unit, idle auxiliary air unit

[gawdzilla]

in that case you cannot just unplug it. you can T it from another pressure source though, such as that boost solenoid valve next to the red arrow. doesn't have to come directly from the pipe.

[BoostFab]

to verify what nick says its the IAA unit, idle auxiliary air unit

damn, too bad i can't remove it w/o the standalone. no big deal, i'll have it rerouted.