BOV comparison ( shoppers guide )

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  1. #1
    CelicaSupra.com Member Yotaholic's Avatar
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    BOV comparison ( shoppers guide )

    O.k. so I liked the idea Mark had with the Bov challange but I wont jack his thread so lets do it here .

    This is a shoppers guide to bov's . All brands must be backed up with a sound clip and please keep it 1j/2j/7m/6m/5m only .
    Post your bov vids pics and info . Lets get a thread going to show whats available and what to expect when you get it . I know we all love the sound but lets also talk about function and why some are better than others . More experianced members will hopefully share some horror stories of cheap china knockoffs failing and maybe share some tuning tips

    Brand: Apexi Twin Chamber
    mount point : turbo side custom flange
    adjustment : valve reaction can be adjusted by the spring tensioning screw at the top, sound can be adjusted by turning the red collar to the desired port
    impressions: love it , not too loud , reminds me of an airbrake
    tuning : nothing yet no changes in tension but I have some questions I don't know enough about tuning a BOV so hopefully this thread will shed some light on this and help a few of us out .


    Last edited by Yotaholic; 08-20-2008 at 09:08 AM.

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  3. #2
    CelicaSupra.com Member KCheng's Avatar
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    and i'll post the stock 7m BPV

    exterior noise is not loud at all however when you sit inside the noise is quite moderate in my opinion. i would probably want something loudER on the outside but keeping the same noise level inside. What i dont really understand is how my 7M MKIII has no sounds at all compared to my 7M MKII. I cant hear my MKIII inside or out...

    i'll get my hks ssqv on and posted another vid



    shot of the kind of exhaust I have:
    more craziness than necessary.more bling.more lip.more detail.my style.
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  4. #3
    CelicaSupra.com Member Superium's Avatar
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    Bosch 108 on a 7mgte mk3
    I have no sound clip but once spring comes along I will get one.
    Under 10 psi it makes a nice pshhh sound, 12+ psi its a very loud and crisp.
    I have heard different results from almost no sound to very loud. I think it just depends on the amount of boost your running and if its used or new.
    I had a used Bosch 108 bpv before I bought a new one and it wasnt as nearly as loud as the new one.
    For around $50 for a new 108 or 110 and basically a drop in replacement of the 7m bpv you really cant go wrong.
    Mark K. -'83 Supra (Carmen) -'87T Supra (Cailin) -'91 Accord (wtf)
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  6. #4
    CelicaSupra.com Member BillyM's Avatar
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    ...if you want to make noise, buy anything on the market, if you want to save your turbo, greddy type R. Anything else is just joking yourself.

    --billyM
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  7. #5
    CelicaSupra.com Member Yotaholic's Avatar
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    Quote Originally Posted by BillyM View Post
    ...if you want to make noise, buy anything on the market, if you want to save your turbo, greddy type R. Anything else is just joking yourself.

    --billyM
    Nice Billy ,, why dont you enlighten us and tell all of us uneducated bov users on why the Greddy is so much better than the Turbo XS, Apexi, HKS and so on . This is meant to be a buyers guide so maybe more info will help others rather than making a "know it all " remark like that . Explain why some mount it on the turbo side and others mount it on the intake , pros/ cons. Some use 2 bovs pros cons,,, Venting to atmosphere has an effect on idle control , why not explain ? Adjustment settings , when is it correct ? You may have all these answers and can help someone . Why not share ? Maybe you have been there done that in some old thread and wrote 2 books about your wealth of turbo knowledge at the age of 22 ?sometimes you come accross as a know it all who thinks he shits in psi and pisses c16

    You caught me on a bad day just explain you post is all I should have said ..

  8. #6
    CelicaSupra.com Member pituala's Avatar
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    I say the best on the market is the Tial 50mm. I don't care for noise makers, which is why I modified my HKS SSQ to be quiet. But I think for all out air removal the Tial is the best. I'll try to get a sound clip of it blowing off, but it's hard in my car....lol
    '85 P-Type 1J "The Torqueless Wonder"
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  9. #7
    CelicaSupra.com Member BillyM's Avatar
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    Based on the prior posts in this thread, I shouldn't have to explain shit. I'll put in as much as you guys did, "it make good noise, billy likey, fire hot"...

    But I will. ...take a deep breath and open your mouth as wide as it can go, exhale. Hear much noise? How fast were you able to completely empty your lungs? Now, try the same thing while whistling. It'll make a great noise, similar to all those BOV's on the market, but to move the same volume of air, it would take considerably longer (and allow pressure buildup on the internals, ie compressor). The other thing you want to be sure of is diaphram size vs valve size on the single-action bov's. Those ones with little upper map-referenced diaphrams usually rely on a heavy spring, which not only slows, but restricts valve actuation.

    I shouldn't have left out the Tial, that thing has a similar ideology behind it, "GET AS MUCH AIR OUT AS POSSIBLE". ...but there's no way to recirc the tial, so I would only suggest it on map based vehicles.

    Seriously though, if you are buying a bov based on sound, you're a tool. You paid how much for your car to go "psheewwww"? Pick based on your boost pressure and budget, not sound/style. Bigger is better, flow is your friend, etc... Now excuse me, I've got to go piss some c16, thanks.

    --billyM
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  10. #8
    CelicaSupra.com Member Killer Squirrel's Avatar
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    Quote Originally Posted by pituala View Post
    I say the best on the market is the Tial 50mm. I don't care for noise makers, which is why I modified my HKS SSQ to be quiet. But I think for all out air removal the Tial is the best. I'll try to get a sound clip of it blowing off, but it's hard in my car....lol
    From what I've read in the other Supra forums, the Tial is a favorite. I've used the stock 7M, Bosch, Greddy Type-S and an HKS SSQ knock-off. Of those, the Bosch worked the best actually, but I was on mild boost. The new Synapse BOV is sounding really good, and the few people that have tried it say they love it. Jake (ABQMK2) said he's getting one, and I'm anxious to hear his experiences with it.
    -Michael

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  11. #9
    CelicaSupra.com Member pituala's Avatar
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    My HKS used to sound like a really loud and annoying sneeze. I hated it. It totally gave away my secret.....lol. I pulled the red ring with the fins on it out and cut the fins out so it was just a ring. Now it sounds like a large exhale.....although I know for a fact it's too small for my car.
    '85 P-Type 1J "The Torqueless Wonder"
    557whp/449wtq@25psi on 93 octane
    Precision 6266SP CEA


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  12. #10
    CelicaSupra.com Member pituala's Avatar
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    Let me see if this works.

    I'm the one that says "That felt better."
    http://myspacetv.com/index.cfm?fusea...ideoid=8784081
    '85 P-Type 1J "The Torqueless Wonder"
    557whp/449wtq@25psi on 93 octane
    Precision 6266SP CEA


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