04 sti, sounding like bov when shifting, but no bov

Discussion in 'Modifications And Maintenance' started by 83projectbrat, Apr 18, 2007.

  1. 83projectbrat
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    83projectbrat New Member

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    on my 04 sti, just put a fp green, and all the supporting mods. when hitting like 2-3 psi of boost letting off the gas fast, it sounds like a quiet bov. doesnt do it when you very gentely let off the gas

    is this my stock bpv with a bigger turbo making the sound?

    i have a aps 525 fmic as well, pretty sure i dont have any boost leaks, let me know for anything to check out..

    thanks

    Matt
     
    83projectbrat, Apr 18, 2007
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  2. esperunit
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    esperunit Well-Known Member

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    my stock td04 makes the same noise. just turbo noise IMO
     
    esperunit, Apr 18, 2007
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  3. 83projectbrat
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    83projectbrat New Member

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    holy fast reply hahaha, thanks esper. its been over the winter since i drove the car so maybe i just never paid attn. to it

    thanks!
     
    83projectbrat, Apr 18, 2007
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  4. tmarc12366009
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    tmarc12366009 Well-Known Member

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    Yeah, probably just natural turbo noise... If you have any exhaust mods including uppipe and downpipe or an air intake snorkle delete you will also enhance the turbo sound a bit too!!! :cool:

    This is especially nice when running through the gears around buildings or tunnels hearing the air blow off even from a stock BOV!!! I like! It's NNNIIICE!!!!
     
    tmarc12366009, Apr 18, 2007
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  5. angusracer
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    angusracer Well-Known Member

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    haha this is a funny thread
     
    angusracer, Apr 18, 2007
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  6. wrxjoe
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    wrxjoe Well-Known Member

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    it could be the cai
     
    wrxjoe, Apr 18, 2007
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  7. angusracer
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    angusracer Well-Known Member

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    uh yea... the bpv is releasing the compressed air back into the intake and since you have a less restrictive air filter, turbo and engine (bpv aswell) noise are less restricted aswell... anymore questions?
     
    angusracer, Apr 18, 2007
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