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Old 06-21-2007, 03:50 PM   #1
synapseengineering
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Default Synchronic BOV

There have been some threads inquiring about this design
and I would like to answer any questions/concerns that you have regarding this product and how it works. I can't post links to the user manual or vids, so if you would like to see these PM me and I will send you the links.


Synchronic was designed to be a fast acting BOV that eliminates compressor surge and has these features:
*Retails for $219 (contact your NASIOC sponsor retailer)
*Atmospheric or recirculated discharge
*Retail kit includes 1.25" recirc fitting and stainless weld-on pipe flange
*No need to adjust or figure out which spring to use for your application
*Interchangeable mounting flanges so that you don't have to refabricate when switching from another BOV
-HKS SSQ/TypeII mounting flange
-Greddy Type S/R, HKS racing mounting flange
-Aluminum Weld-on flange
-Tial 50mm mounting flange (available in 3 weeks)
-1" inlet & discharge hose-end fittings (available in 3 weeks)
*Anti-stall valve is now available for MAF cars with an atmospheric dump
*An overboost protection circuit is in development that is already built into the BOV
* Registered users of the site do not see these ads.
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Old 06-22-2007, 01:23 AM   #2
RallyBlue
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Here are some videos explaining this breakethrough in BOV/BPV design.

Synapse BOV vs Tial http://videos.streetfire.net/video/4...ee0182efa3.htm
Synapse BOV vs HKS SSQV http://videos.streetfire.net/video/6...3f0150f005.htm

He also has a EWG that works on the same princepal
http://videos.streetfire.net/video/7...e900493336.htm
http://www.youtube.com/watch?v=LStlqe64m4M

And the SEMA 2006 Streetfire interview
http://videos.streetfire.net/video/b...7800261cd3.htm

I am currently running a prototype synapse 40mm EWG on my 30R WRX
I can say that against the Tial 38mm that I was running this WG is Very smooth. The power delivery is more linear and does not choke when at the top of the RPM band.

These products are very well designed and would highly recomend them to anyone going EWG or to replace your current WG with these.
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Old 06-28-2007, 02:40 PM   #3
engineerx
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Any updates?
Are the EWG's available yet? >> which vendors?
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Old 06-28-2007, 02:53 PM   #4
synapseengineering
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EWG's are in stock now. The only thing I don't know is which of my distributors are NASIOC sponsors, so for the retailers out there I'll post the wholesalers that the NASIOC sponsors probably buy from:

Pro-Motion Distributing
Motovicity Distributing

or you can check out our distributor page
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Old 06-28-2007, 04:07 PM   #5
Andrew
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What does an anti-stall valve mean?
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Old 06-28-2007, 07:16 PM   #6
Andrew
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I just read your manual: http://www.synapseengineering.com/ar...bov_manual.pdf

it sounds like the valve allows the BOV to close during vacuum; therefore, not forcing the car to run rich or other problems which are generally associated with an atomospheric bov with a car where the maf is before the turbo.

am i right?
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Old 06-28-2007, 10:06 PM   #7
bzbuzz
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so this bov is safe for WRX for sure? and we can enjoy the sound w/o no problem at all? I am very curious to see actual reviews from us...anybody?
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Old 06-29-2007, 03:35 AM   #8
synapseengineering
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I designed Synchronic BOV to be fast reacting. Basically, to follow exactly the events in the intake manifold. Ideally, I would like to see end-users re-routing the discharge after the air flow meter. When this is done you may actually see improved gas mileage as well since this is feedback that we have received.

However, I know that there are many out there that want that atmospheric dump. And so, the Anti-Stall valve was developed so that you could dump to atmo and still be able to idle without the car running lean at idle by sucking in unmetered air after the MAF (correct Andrew). However, whenever you dump metered air out to atmo you have fuel in the system without the amount of air that was intended for it, so you may still get richness between gears.
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Old 06-29-2007, 06:48 PM   #9
Andrew
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I don't understand how the anti-stall works. Could you explain it to me? Why would it work when the car idles but not when you shift?

NM I think I get it. When you shift, you let out the boost pressure, but at idle it closes... So it closes when you shift too, but the point is, is that you are letting out metered air and nothing is compensating for that.



edit:

After thinking about it, wouldn't the richness come from sucking air in after the maf? Instead of letting the air out?

Last edited by Andrew; 06-30-2007 at 04:07 PM.
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Old 07-02-2007, 04:51 AM   #10
dingobite
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Any updates yet on the BOV when it will be availible for subarus ?
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Old 07-03-2007, 01:16 AM   #11
djerickd
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Awesome deisgn! PM'd u

Last edited by djerickd; 07-03-2007 at 02:34 AM.
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Old 07-05-2007, 10:30 AM   #12
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good deal !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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Old 07-08-2007, 04:01 PM   #13
synapseengineering
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Finally a vid on a Subaru, the slight flutter you hear is from the anti-stall valve because this user wanted it dumped to atmosphere, it is non-existent when recirculated.

http://www.youtube.com/watch?v=NQAcVgKPXG4
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Old 07-08-2007, 09:29 PM   #14
djerickd
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wow it's very effective!!
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Old 07-08-2007, 09:59 PM   #15
ERIKBROCKHOFF
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#2 FTW if the car isn't running rich in between shifts.
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Old 07-08-2007, 10:01 PM   #16
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Or put holes in the hood LOL
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Old 07-08-2007, 11:39 PM   #17
bzbuzz
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can we hear it w/ recirculated one?
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Old 07-09-2007, 12:59 AM   #18
flwrx
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does it require lubricating or cleaning?
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Old 07-09-2007, 03:42 AM   #19
synapseengineering
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flwrx, the SB001 comes pre-lubricated from the factory. The lubricant is proprietary and will not evaporate over time and should not require further application. Also, the Synchronic geometry allows the design not to have metal to metal contact, so the only potential wear points over time are the o-rings and our formulated lubricant should eliminate that possibility.

BZ-It is very hard to hear recirculated.

BTW, Anytime you dump metered air to atmosphere, you will run rich between shifts. Although some BOVs make the effect worse than with others. It is all about fast actuation, we're talking milliseconds. The faster the valve shuts between gears, the less richness you get.
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Old 07-09-2007, 01:52 PM   #20
dingobite
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Quote:
Originally Posted by synapseengineering View Post
Finally a vid on a Subaru, the slight flutter you hear is from the anti-stall valve because this user wanted it dumped to atmosphere, it is non-existent when recirculated.

http://www.youtube.com/watch?v=NQAcVgKPXG4

My forge bpv sounds every much like the tial including the whiny little ping sounds during boost, during the time underboosting and dropping out of boost at WOT i can no longer stand the sound.

You bov sounds much nicer even venting like a bov.
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Old 07-10-2007, 04:14 AM   #21
synapseengineering
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This is something to look into. I haven't heard of this being prevalent with the Forge units. Thanks for the heads up.
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Old 07-10-2007, 09:15 AM   #22
dingobite
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Im not sure if i just have a defective unit or not, theres a few things that could be wrong i will be taking it with me for my tune next week.


I think it may be my tune thats making it sound this way im not 100% possitive but i think that what the problem is.



sorry to /thread jack.

EDITED i think i know the problem.

Last edited by dingobite; 07-16-2007 at 11:20 AM.
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Old 07-18-2007, 10:37 PM   #23
Fauj
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will the bov come with a flange that fits the stock intercooler? And is the resirc piece included?

who is the nasioc vendor?
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Old 07-19-2007, 04:05 AM   #24
synapseengineering
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The BOV kits are currently going to be the universal kit and you would then purchase the flange kit for your given model. This may actually be a good thing for most. Once you upgrade your intercooler piping you will already have the weld-on flange and recirculation fitting.
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Old 07-19-2007, 01:12 PM   #25
Fauj
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r u selling the flange kit for the stock intercooler i guess is my question then, is it avaliable?
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