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Tial Q BOV issue


1badwrx02

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Hey guys I recently installed my Tial Q BOV in my 02 Subaru WRX

 

Mods

-FMIC

-STI Injectors

-16G Turbo

-Walboro 255

 

My front o2 sensor is bad also

 

Now for the issue, my BOV is fluttering during partial throttle. It works awesome during low boost like the 0-5psi range and also when im at wide open throttle letting it loose. But when I am in the 5-15psi range and not gunning it it makes a flutter noise. Wondering if anyone has had this issue or seen it before, would greatly appreciate your help guys.

 

Thanks.

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on the srt4 that was called part throttle boost..preety much the turbo was so small even at half throttle it woudl built boost but the tb wasent opening up all the way and all the boost woudl hit the un open tb and not being able to go anywhere and in doing so making that flutter sound. ad for the turbo ...not sure if thats the same suitation but when drivingt the srt it was a all or nothing kind of drive just my 2 cents
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tial is a good bov and gate. works perfect on my truck and many fast cars.

you proably have too stiff a spring in it. and the engine vac is pulling it open with the pulses in the intake. get a sofrter spring and problem gone.

http://www.tialmedia.com/documents/w3_tial_bovq_sp.pdf

i had the same issue with mine had a stiff spring when i purchased it but i believe i went to the lightest spring and now its flawless.

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Spring is not an issue I know for a fact I have a 11 psi spring and bought a 10 psi spring because people said the spring was too hard. But the 10 psi spring was too soft and caused my bov to open at idle causing idle surge. I also tried putting a spacer on both springs. But the 11 psi spring seems to work best. I'm thinking it's the throttle body problem. Did you ever solve that problem Paul?
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