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Old 11-07-2015, 11:23 PM   #1
Scooby Specialist
Member#: 131280
Join Date: Nov 2006
Chapter/Region: BAIC
Location: Northern California Hayward
2004 Impreza WRX

Default Odd Tial Q BOV Issue

Hello Nasioc:

I have an odd problem with my Tial Q Bov. I am running the 8psi spring which is correct for my vacuum. My issue is that it opens slightly and closes during cold starts ONLY or when the car has been sitting for a while. Basically rpms at 2k or 1.5K. Besides that, after being warm it stays shut at idle and performs as it should. I do not have any vacuum leaks as I checked that out already. Any ideas?

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Old 11-08-2015, 01:12 AM   #2
Scooby Specialist
Member#: 363268
Join Date: Jul 2013
Location: California
2015 WRX STi


Keep it warm?
carlos.danger is offline   Reply With Quote
Old 11-08-2015, 07:48 PM   #3
Scooby Newbie
Member#: 340526
Join Date: Dec 2012
2004 WRX STi

Default Odd Tial Q BOV Issue

Sounds like the spring is too soft. The tial chart isn't always a 100% fit for a given vacuum.
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