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Thread: Blow Off Valve, Dump Valve, BOV

  1. #16
    I can post! MEMBERSHIP EXPIRED supra sam's Avatar
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    Quote Originally Posted by Ruff_Rider
    Thanks for that, was worried for a minute. AFAIK? Explain please.
    Know i didn't say this but AFAIK is short for As Far As I Know.

    Iv seen that Bov somewhere before? But i cant for the life of me remember who makes it

  2. #17
    I'm addicted now! MEMBERSHIP EXPIRED MarkTheBoy's Avatar
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    Not sure what you have already but I can vouch for the HKS SSQV, its a good honest dumpvalve. Not stupidly loud but sneezes like hell when you give it lots of welly.
    I have a very limited experience of bovs I admit (SSQV being my first) but have been really impressed with it.

  3. #18
    Day Zero Member Club Member Alex's Avatar
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    A Bov has to be mounted between the throttle body and the turbo...it doesn't really matter where between those two items it is...the SQV kit just reuses the stock point.
    - Alex

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  4. #19
    I can post! Club Member ben1985's Avatar
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    Are atmospheric BOVs only available to make one sound? I don't want one of those BOVs that chirps (tweets?) and am looking for one that sounds like the one on the Supra in Fast and Furious.

    You know the ones that have repetitive whoosh sound (like chh chh chh chh) rather than a single whoooosh. Does that make any sense??

    I was under the impression that this was a re-circulating dump valve? Am I wrong?

    If not can you get aftermarket Re-circulating dump valves? And if so, anyone know of any good models?

    Any advice would be very welcome!

    Cheers,

    Ben

  5. #20
    Work... what work? Club Member uzthedentist's Avatar
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    that bov looks like a hks racing type ii im pretty certain.

    theres a company called turbosmart from australia that make pipes like the one seen in the pic leading off the throttle body which you can connect a bov to, i had one on my soarer.
    http://www.turbosmart.com.au/index.php?id=49
    now restoring my integra type r

  6. #21
    Work... what work? Club Member uzthedentist's Avatar
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    the one that makes the ch ch ch sound is the blitz dual drive with the little metal filter on it
    now restoring my integra type r

  7. #22
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    hi.
    just a quick question,because ive heard it mentioned in various forums that BOV is a bad idea ..when the bov has let out the pressure from the system the turbos will then have to spool up again to pressurise the system therefore it is causing your turbos to work harder to keep the pressure in the system(ie. lag) and the stock one is there to protect the stock ic not to sound nice.
    would anyone agree here,never had much to do with them but it does seem feesable to me?

    also dosent the actuators control your turbos spooling? so when you decelarate or change gear your actuator stops the turbo accordingly,but it dosent stop dead? so why use a BOV?

  8. #23
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    cause when the preasure ur creating to go one way into ur block cant go there anymore there is only one way the presure will go and thats straight back thro ur turbos cusing the fans to spinn backwards??

    so instead of them sppoiling up harder they will endure a very quick change in direction every gear or lift off

    which is worse than the fans spinning the same way faster n slower

    if that makes sense

  9. #24
    here for the long haul Club Member buster's Avatar
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    Yup Lol
    project boy blue just keeps getting bigger and better smooth NA-T

    -No one asked why Buzz Lightyear and a Pirate were filling up a Supra...!!- Harvard Dragonball 2014 thread

  10. #25
    A stubble Club Member edge's Avatar
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    I have a hks one on mine. It seems to make 2 noises
    When using alot of throttle i get the usual whoosh noise but when just plodding about it makes chatter noise if you know wat i mean and sometimes it seems like it does a bit of both.
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  11. #26
    BANNED BANNED mk47's Avatar
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    i have a sard r2d2 on mine and it sounds amazing.. at low revs it sounds like a wastegate though, sort of a flapping noise i love it

  12. #27
    Defeater of Kevin... Club Member SimonB's Avatar
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    Quote Originally Posted by mk47 View Post
    i have a sard r2d2 on mine and it sounds amazing.. at low revs it sounds like a wastegate though, sort of a flapping noise i love it
    That's because it's BOVs or compressor stall that makes that noise, not the wastegate. Wastegates don't make a noise - they only open when full boost has been reached to get rid of excess exhaust, so can only make a noise then. It's got to be one of the oldest and most annoying myths so called "wastegate chatter". There's no such thing.
    Simon.
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  13. #28
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    one question
    doesn't sema (or what ever it's name ) has been chosen the product of the year?

  14. #29
    I'm a newbie MEMBERSHIP EXPIRED
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    one question
    doesn't sema BOV (or what ever it's name ) has been chosen the product of the year?

  15. #30
    I'm a newbie MEMBERSHIP EXPIRED
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    no idea >>

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