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Old 09-21-2014, 10:11 PM   #1
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Default Recommend the best BOV for my boost levels.

Like many, my eBay Blow off valve is not cutting it anymore.

It is the ultra-simple recirculating style, and it really doesn't work horribly considering I got it for free, but I get a little compressor surge still and (more importantly) it's not sealing well until about 4psi, meaning I get epic turbo lag at times. Funny thing is It seems to seal pretty well at idle.

I'm fine with spending some "real money" to get a "real" BOV - but want to make sure I get the right one, as I know many are made for pretty high amounts of boost. I'm only running around 8-10psi, and will probably never go to 12psi as I'm trying to take it easy on my daily driver.

Sealing at idle, no compressor surge, and no closing lag are a must. Make your recommendation!
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Old 09-21-2014, 10:24 PM   #2
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Turbosmart kompact.
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Old 09-21-2014, 10:58 PM   #3
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That's the one FM sells, right? How's it sound? I like it being loud I just don't like the ricey high pitched "ping" sound. The eBay unit I have actually sounds really cool because it's just a big woosh sound.
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Old 09-21-2014, 11:02 PM   #4
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Are you not going to recirculate it? I recommend a Mitsubishi on one. The one begi sells, you can buy it at the dealer for less. From a 1995 3000gt
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Old 09-21-2014, 11:03 PM   #5
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My only suggestion is that you purchase whatever BOV you wish for youor ride from an authorized dealer as nowadays most BOVs you find on EGay are fine replicas of the real thing.

Do your research on this when you buy a TIAL, GREDDY or. HKS. The Tial BOV replica is extremely identical to the original side by side. Read below link

http://www.tialsport.com/index.php/authenticity/117-sct
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Old 09-21-2014, 11:29 PM   #6
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Quote:
Originally Posted by btabor View Post
Are you not going to recirculate it? I recommend a Mitsubishi on one. The one begi sells, you can buy it at the dealer for less. From a 1995 3000gt
Nah, I like the sound of it vented to atmosphere, as well as I don't really have a reason to recirculate since I have MS3X.

Is that the Bosch unit? I have heard mixed reviews, but I know it's pretty cheap so I'm happy to try it.
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Old 09-21-2014, 11:32 PM   #7
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Turbosmart Kompact Dual Port, can do VTA or recirc
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Old 09-22-2014, 01:12 AM   #8
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forge or turbosmart for the simple/compact ones
tial for the not so compact but great anyway

just outa curiosity: what do you have now? like which exact one? link?

Last edited by 18psi; 09-22-2014 at 11:57 AM.
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Old 09-22-2014, 12:37 PM   #9
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Dual port seems pretty cool, sounds great, and is $163 (cheapest I found so far) which is really not bad at all.

18psi: I will have to take pics of it, I've actually never been able to find this one for sale. I think its a relatively old piece, more when the chinese first started figuring out how to make super-simple BOV's.
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Old 09-22-2014, 05:17 PM   #10
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Quote:
Originally Posted by Ds1 View Post
Nah, I like the sound of it vented to atmosphere, as well as I don't really have a reason to recirculate since I have MS3X.

Is that the Bosch unit? I have heard mixed reviews, but I know it's pretty cheap so I'm happy to try it.
It is not the bosch unit, this one looks and feels a lot more sturdy. It is designed to be recirculated so I'm not sure how it would sound vta

http://www.discountmitsubishiparts.c.../MD162219.html
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Old 09-23-2014, 11:53 AM   #11
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Quote:
Originally Posted by Ds1 View Post
That's the one FM sells, right? How's it sound? I like it being loud I just don't like the ricey high pitched "ping" sound. The eBay unit I have actually sounds really cool because it's just a big woosh sound.

Depending on your flange setup you may be limited. Or is it connected via hose?

I recently picked up a red limited edition greddy fv bov, much wooooosh. Actually sounds like a compressor release. Overall I'm very happy with my purchase, solved my leaky bov issue, crap idle, and no more compressor surge (egay greddy rs copy)

the FV also seals at idle due to the new spring design, lovin it.

If I were to recirc I'd pick up a GFB bov, their site has a great selection that may work for your application. They also have vent to atmo bov as well.
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Old 09-23-2014, 12:37 PM   #12
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Holy **** the FV is expensive, but looks like a great design.

I'm connected via hose but thankfully the BOV section of my intercooler piping is a separate piece connected by couplers, so not a big deal to change it.

Yeah, it seems like a nice BOV solves half the issues everyone ever complains about. Right now I'm really leaning towards the Turbosmart Kompact Dual Port. Good sound, good value, and small size. I will probably pick it up when I get my paycheck this week; I'll report back.
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Old 09-23-2014, 12:40 PM   #13
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One more question: With the Turbosmart, it comes in 20mm, 25mm, and 34mm outlets. Which would be best for my boost levels? I would assume bigger is needed for higher boost?
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Old 09-23-2014, 12:51 PM   #14
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Stop associating bov size with boost levels. Its silly, becuase in our case even something like 15mm would be able to relieve pressure enough to get the job done.

it might be an issue if you drove a supra with a giant snail at 50psi....

....what I'm saying is: doesn't matter. get what fits your hose best
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Old 09-23-2014, 12:52 PM   #15
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I'll recomend the same **** i recommend to everyone. If you want VTA, get a Forge.

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Recommend the best BOV for my boost levels.-vta.evo14.jpg  
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Old 09-23-2014, 01:03 PM   #16
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Which Forge specifically? I see they make a single and dual piston - I would assume dual is better and it's also cheaper...
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Old 09-23-2014, 01:11 PM   #17
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Quote:
Originally Posted by Ds1 View Post
Which Forge specifically? I see they make a single and dual piston - I would assume dual is better and it's also cheaper...
Quote:
Dual Piston Ram Dump Valve - Unlike single piston or diaphragm diverter valves, this uses counter balanced springs and dual pistons to prevent the valve from leaking air into the intake system at idle. This prevents our diverter valves suffering any of the failures associated with single piston and diaphragm type diverter valves.
seems legit
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Old 09-23-2014, 01:18 PM   #18
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Quote:
Originally Posted by Girz0r View Post
seems legit
Not sure if sarcasm.

Yes dual valve has a block that stops air from entering/leaking out when on part throttle/idle.
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Old 09-23-2014, 01:21 PM   #19
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yep, used one of those and loved it, can't go wrong
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Old 09-23-2014, 01:41 PM   #20
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And it's only like $135 for the dual piston. Heck yeah. That's not much more than some of the knockoffs out there.

Any idea where they are made?
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