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Old 05-25-2022, 11:59 AM   #1
mcpotus
Scooby Newbie
 
Member#: 528561
Join Date: Jan 2022
Chapter/Region: W. Canada
Vehicle:
2011 STi Hatch

Default Where does the vacuum line on the OEM bypass valve go?

I'm putting my car back together and I came to the point where I realized that the OEM bypass valve on the TMIC has a nipple for a vacuum line that goes off to the passenger side. The problem is I have no idea where the other end of that hose is supposed to connect to.

Everything I've seen online just has that hose already connected on the engine side. I couldn't find a routing diagram for this in the FSM either. Really at a loss here.

It's the small hose on the BPV that points to the right then curves back towards the left:


In the parts diagram, it is the hose with part number 1AB14:


The problem is that on my car there is no nipple on the manifold like that diagram has for the vacuum hose to connect to.

Any help would be appreciated

EDIT: This is for a GR STI. I've found a bunch of resources for WRXs and other STIs that involve a tee of some sort, but mine didn't have such a thing when I removed it.
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Last edited by mcpotus; 05-25-2022 at 12:18 PM.
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Old 05-25-2022, 12:15 PM   #2
Jedi03
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Member#: 491095
Join Date: Sep 2018
Chapter/Region: SWIC
Location: New Mexico
Vehicle:
2009 STi Blue
Blue

Default

iirc its below the throttle body...
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Old 05-25-2022, 12:25 PM   #3
mcpotus
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2011 STi Hatch

Default

Quote:
Originally Posted by Jedi03 View Post
iirc its below the throttle body...
Nice, I think you're right. You helped me to narrow my search a bit better, and I found what I think is what you're talking about:



The photo isn't my car, but I'll check shortly.
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Old 05-25-2022, 01:58 PM   #4
mcpotus
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Member#: 528561
Join Date: Jan 2022
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2011 STi Hatch

Default

Found it - it was indeed underneath the throttle body. Fairly easy access with the TMIC off.
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