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Thread: Synapse BOV

  1. #21
    Very expensive....
    MK3Brent's Avatar
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    Default Re: Synapse BOV

    TiAL.

  2. #22

    Default Re: Synapse BOV

    I really don't understand that video where the Synapse is always blowing air out. At idle, wouldn't vaccum want to be pulling air in through the BOV instead?

  3. #23
    I need deeper pockets
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    Default Re: Synapse BOV

    Well I think I am going to mess with the one I got and if I can't get it to quit surging at low power then I am probably going to give this one a try. Does anyone have the exact measurements. Ok I know it is bigger than X valve but I want exact measurement so as to see if it will fit in the limited space I have

    91 Turbo with bored out 57 trim CT-26. Full 3 inch exhaust from turbo back. Stance Coilovers, ST sway bars with adjustable end links, Spearco intercooler w/Hard pipes running 15psi and full set of gauges. Aeromotive FPR and Walbro 255. B&M cooler w/fan for tranny. Rollin on 275-30-19 in the back and 245-35-19 in the front. Just a daily driver except for when the autocross comes up in the area. Kumho V710 Racin slicks when I race it.

  4. #24
    The Name's Chunks
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    Default Re: Synapse BOV

    Quote Originally Posted by Mr--Peanut View Post
    I really don't understand that video where the Synapse is always blowing air out. At idle, wouldn't vaccum want to be pulling air in through the BOV instead?
    There trying to say that on that car the turbo is so efficient that its actually creating pressure in the intercooler pipe at idle. There would never be vac in the intercooler pipes unless the air filter/turbo is causing a restriction, That said i dont know if i believe that the turbo is actually working that well to create a moderate pressure in the intercooler piping at idle.

    Im curious as to how close that valve is to the radiator fan......

    Edit much later: I really dont understand the big deal about this. On the "How it works" Video is explains nothing about how the valve works only there gimmicks.

    He claims no vacuum is required to cause the valve to release pressure, Though to do this you need a three way VSV with one side open to atmosphere. This is all well and cool on a test stand where you pressure it up and flip a switch to release it, But on a car how would you signal the VSV to open? The only practical use on a car is to hook it to a manifold vacuum source like any other BOV.

    There is one difference between this valve and a regular valve such as the Greddy Type-s, the way the piston moves to open it.

    The way it is actuated is exactly the same, theres not much "Ingenuity" at all. Higher pressure on one side and lower pressure on the other causes the piston to move and release the pressure.

    A standard valve with a design such as the Greddy Type-s Will be just as air tight under boost. The boost pressure is equal on either side of the piston so really the only imbalance is the spring pre-load, Untill the throttle closes and manifold pressure goes negative puling against the spring pressure (with help from the boost on the other side) making it vent.

    Maybe im missing something? </rant>
    Last edited by Nosechunks; December 29th, 2009 at 12:15 AM.

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  5. #25
    WTF did he just wright ?
    NashMan's Avatar
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    Default Re: Synapse BOV

    i have know 2 people that ran them no issues and there ntot hat ugly eather and there just abit longer thne the ssq
    Judging me by my spelling is your biggest mistake


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  6. #26
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    Default Re: Synapse BOV

    i have had mine for a year now and no problems at all. I run 20psi everyday and it has never surged on me. i realy do love this bov more than any other bov i have used (hks ssq, tail, XS, bosh 110, greddy). I use a recirculating fitting, just like the stock bov uses but its twice the size! I live next to san diego and thats were the synapse is located, they are always willing to help anyone out.


    ic set up2.jpg
    Last edited by mk3tattoos; January 8th, 2010 at 02:42 AM. Reason: adding picture

  7. #27
    Toyota Technician
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    Default Re: Synapse BOV

    I'm sorry to resurect this thread but I have this BOV I bought it 4 years ago and I hope it works great like mk3tattoos says. After hearing good and bad I don't know what to believe.

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  8. #28
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    Default Re: Synapse BOV

    Quote Originally Posted by phatbimmer View Post
    I'm sorry to resurect this thread but I have this BOV I bought it 4 years ago and I hope it works great like mk3tattoos says. After hearing good and bad I don't know what to believe.
    i wish someone would clear it up!!

  9. #29
    Custom CT26, CT12a, CT20 upgrades
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    Default

    Mine worked great for 1-2year. Sold it and bought a Tial Q, just for looks..
    '91 Supra Hard Top - Building 700rwhp 1J -Achieved-
    T70 turbo, 1200cc injectors, proefi 128 ecu, Flex fuel, E85, dual 044, BC 272 cams, BC springs & retainers, HKS ADJ Cam, HKS timing belt, 1ZZ COP, Tial Q BOV,1-piece alum driveshaft, ACT extreme PP, ACT 4-Puck Ceramic, MC thrust washer, 3.91 LSD 1.5way, 14.2' Front BBK, 13.8" Rear BBK, StopTech Pads, ST sway bars, F/R Poly bushings, Tein Mono Flex Coilovers, EDFC, Recaro Interior
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  10. #30
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    What do you need cleared up? It is one of the best, nuff said. Really though, what is worries do you have?
    1jz, innovate lc1/xd16, walbro 255, 12v mod w/new relay, synapse bov, biltz custome built exuast, tokico illumina II w/ Eibach springs, nitto on p1 racing rims, act stage 2,auto meter boost gauge,SAFC2, MINES tuned ecu, 550's,DM intercooler kit, Perrin mdc, nashman v2 shifter, DM 67mm w/.72ar turbo kit, and a little more......

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