Recommend the best BOV for my boost levels. - Page 2 - Miata Turbo Forum - Boost cars, acquire cats.

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DIY Turbo Discussion greddy on a 1.8? homebrew kit?

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Old 09-23-2014, 02:15 PM   #21
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Quote:
Originally Posted by triple88a View Post
Yes dual valve has a block that stops air from entering/leaking out when on part throttle/idle.
Why would one ever use the single piston, at the same price? School me on the pros and cons, please.
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Old 09-23-2014, 02:24 PM   #22
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Quote:
Originally Posted by Ds1 View Post
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?
No idea but been running mine for 3 years now. The only thing i've replaced has been the Orings but those are 30 cents a piece, 2 total.

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Originally Posted by DNMakinson View Post
Why would one ever use the single piston, at the same price? School me on the pros and cons, please.
Single piston is 10 bucks cheaper. It's also simpler so less failure points. Also the secondary piston blocks some air flow on cars that matters. I dont know if there is any difference in the design of the main piston.
This one basically behaves like the Tial bovs. It's completely open at idle, and deceleration and partly open at cruise.
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Old 09-23-2014, 02:28 PM   #23
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I was gonna say: on some cars you actually want it open at idle.

Our cars are not those cars though, we ditch the maf as the 1st order of business
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Old 09-23-2014, 02:34 PM   #24
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Come on guys I can't believe you aren't answering the important questions here.



Like can I put a duck call on it?
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Old 09-23-2014, 02:36 PM   #25
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Duck call? Not on the VTA forge. Those are pain in the *** to modify since theres holes in all directions. You need something with a nasty hole like the diverter valves.
http://www.forgemotorsport.com/conte...oduct=FMDV006A

You can however put the inner tube on your exhaust and sound like an F1 car at times.
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Old 09-23-2014, 02:37 PM   #26
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you'd need a bpv style for that
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Old 09-23-2014, 02:40 PM   #27
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Oh man oh man, I'm so putting a duck call in my eBay one before I swap it!!
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Old 09-25-2014, 01:16 PM   #28
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Anyone try "Go Fast Bits" TMS BOVs?

I am considering something like this: http://www.gfb.com.au/products/blow-...730-817-by-gfb

Basically it's an adjustable BOV that goes from full VTA to full recirc. Mainly I like the idea of recirc for stealthy reasons but I like the ability to go full VTA if I want.

Am I being stupid?
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Old 09-25-2014, 01:35 PM   #29
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gfb is pretty nice too

I honestly don't see the point of that though: on a car that routes the air back into stock airbox, and it is truly stealth, that would be cool. but on our setups, the difference between the settings would be loud and LOUD. Neither would truly be stealth...IMO
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Old 09-25-2014, 01:45 PM   #30
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Quote:
Originally Posted by 18psi View Post
gfb is pretty nice too

I honestly don't see the point of that though: on a car that routes the air back into stock airbox, and it is truly stealth, that would be cool. but on our setups, the difference between the settings would be loud and LOUD. Neither would truly be stealth...IMO
You can use a foot long rubber hose that will still be VTA however it will be quieter because of the additional tubing. Basically you'll get just an air rushing through noise instead of a pss.

It's a nice bov but imo it's useless for us guys that are running a map sensor and dont care about recirculating. The extra cost is only good for the MAF setups that go wonky.

IMO the Mach 1 is a better choice if u want to go that route
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Old 09-25-2014, 01:47 PM   #31
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Quote:
Originally Posted by Chiburbian View Post
Anyone try "Go Fast Bits" TMS BOVs?

I am considering something like this: http://www.gfb.com.au/products/blow-...730-817-by-gfb

Basically it's an adjustable BOV that goes from full VTA to full recirc. Mainly I like the idea of recirc for stealthy reasons but I like the ability to go full VTA if I want.

Am I being stupid?
GFB unit looks like quality imo. Aside from MCM, I havent seen too many in action. Having the ability to go stealthy or vta can be a plus if you want the best of both worlds where as others dont care of the sound and just recirc. I would choose the manual adjustment vs the electronic motor.

Also, It looks like it would be a great fit for a begi pipe style bov replacement
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Old 09-25-2014, 02:05 PM   #32
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Quote:
Originally Posted by Chiburbian View Post
Anyone try "Go Fast Bits" TMS BOVs?

I am considering something like this: http://www.gfb.com.au/products/blow-...730-817-by-gfb

Basically it's an adjustable BOV that goes from full VTA to full recirc. Mainly I like the idea of recirc for stealthy reasons but I like the ability to go full VTA if I want.

Am I being stupid?
I've owned a car with a GFB valve on it. Seriously the loudest thing ever. You drive your 200hp Miata around feeling ashamed because you're making noises that would shame a 1000hp Supra.

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Originally Posted by Girz0r View Post
GFB unit looks like quality imo. Aside from MCM, I havent seen too many in action. Having the ability to go stealthy or vta can be a plus if you want the best of both worlds where as others dont care of the sound and just recirc. I would choose the manual adjustment vs the electronic motor.

Also, It looks like it would be a great fit for a begi pipe style bov replacement
It is. FM used to use them on their kits before moving to Turbosmarts.
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Old 09-25-2014, 08:19 PM   #33
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Just ordered the Forge Dual Piston with side mooted vacuum hose inlet. Should be perfect for my setup, made in UK, and only $150 out the door after shipping. I'm pretty satisfied already, I figured I would be spending $250+ on a Greddy or HKS!
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Old 09-25-2014, 08:38 PM   #34
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Quote:
Originally Posted by Ds1 View Post
Just ordered the Forge Dual Piston with side mooted vacuum hose inlet. Should be perfect for my setup, made in UK, and only $150 out the door after shipping. I'm pretty satisfied already, I figured I would be spending $250+ on a Greddy or HKS!
Do you have a link by chance? Can't seem to find it anywhere.

Edit: Just kidding I found it.
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Old 09-25-2014, 09:01 PM   #35
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Lol dude, I was gonna say, epic Google ninja fail.

Since I already copied the link, for anyone who is lazy: http://www.forgemotorsport.com/content.asp?inc=product&product=FMDV004A_[New%20Code]-[New%20Code]
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Old 09-25-2014, 10:21 PM   #36
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Quote:
Originally Posted by Ds1 View Post
Just ordered the Forge Dual Piston with side mooted vacuum hose inlet. Should be perfect for my setup, made in UK, and only $150 out the door after shipping. I'm pretty satisfied already, I figured I would be spending $250+ on a Greddy or HKS!
Definitely will last longer than the condom diaphragm bovs.
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Old 09-25-2014, 10:41 PM   #37
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Quote:
Originally Posted by triple88a View Post
Definitely will last longer than the condom diaphragm bovs.
True, but then you won't get the warming or cooling sensations.
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Old 09-25-2014, 10:56 PM   #38
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I bought Vlad's Forge.... Haven't finished my motor yet but I can't wait to see how it sounds!

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Recommend the best BOV for my boost levels.-20140802_085531_zpsosyfkll9.jpg  
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Old 09-25-2014, 11:39 PM   #39
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you know its gon sound extra sexy just cause it was mine
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Old 09-26-2014, 12:47 AM   #40
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Quote:
Originally Posted by BTMiata View Post
I bought Vlad's Forge.... Haven't finished my motor yet but I can't wait to see how it sounds!
As someone said long time ago.. it sounds like an alien giving birth.

Sounds kinda like that but this is a bad video. You can however hear the harmonic pew going off. If you like it, do not touch anything on the holes. On the other hand if you want the regular ol air compressor sound you can enlarge them. Wish i had known that before i chopped mine up.
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