Synapse Syncronic BOV?

[Aaronlux]

Anyone have this installed on their MSP? I want to hear what it sounds like on our cars.

Aaron

 

[steedspeed]

does it sound like this??

http://www.youtube.com/watch?v=eVc9mn06KYo

 

[Aaronlux]

I know what it sounds like on other cars, but I'm planning on getting it and want to hear some audio first.

 

[Speed3.5]

steed- is that BOV new design that you came up with ??
Haven't seen that sold by other retailers online or adv. online ??

do you have it in 2.5-2.65" ??

how much for one ?

 

[Crazee D]

Mine just arrived but is not yet installed

 

[steedspeed]

steed- is that BOV new design that you came up with ??
Haven't seen that sold by other retailers online or adv. online ??

do you have it in 2.5-2.65" ??

how much for one ?

Yep! Invented, designed, patented, SEMA design award, selling at $200 each but they don't work unless you are blowing through your MAF or using a MAP sensor.

I have 2.5 inch and 3 inch.

 

[kamon8404]

Yep! Invented, designed, patented, SEMA design award, selling at $200 each but they don't work unless you are blowing through your MAF or using a MAP sensor.

I have 2.5 inch and 3 inch.

So you mean have the maf after the bov before the TB.

 

[neox.286]

I know what it sounds like on other cars, but I'm planning on getting it and want to hear some audio first.

lol, that link was to steed's bov, not the synchronic =P


nice bov design though steed! I really like it

 

[Speed3.5]

Mine just arrived but is not yet installed

which one you just got , steed speed one or the synapse one ??



Steed - is that self adj. to the psi range of let say 6psi - 30 psi or you need to adj. like HKS adj. ones or something like that ??

 

[neox.286]

judging from the design I'd say it could handle a large range of boosts, its not the same kind of bov as the hks where it needs to be adjustable

 

[steedspeed]

So you mean have the maf after the bov before the TB.

Yes some people do that so they can vent to atmosphere.

nice bov design though steed! I really like it

Thanks!

Steed - is that self adj. to the psi range of let say 6psi - 30 psi or you need to adj. like HKS adj. ones or something like that ??

It will self adjust to any boost level and can't possibly leak.

judging from the design I'd say it could handle a large range of boosts, its not the same kind of bov as the hks where it needs to be adjustable

Correct, tested to 100 psi no leaks.

 

[neox.286]

(thumb)

if I didn't have an issue with cutting up the brand new intercooler pipes for the turbolife fmic I would totally pick one of those things up...

 

[synapse]

Steed- Cool design. Can you make a video where you are revving the throttle so that you can show how it reacts to pressure changes in the intake manifold?

I also noticed that it tends to flutterdump http://www.youtube.com/watch?v=jEUWEsqoWz8. Is it harder for it to open as you run more boost?

 

[Crazee D]

idk how a WG would be self-adjusting, does it require an external boost controller?

 

[neox.286]

no, it uses boost pressure to close itself, so no matter what pressure you give it the thing will not open

its kindof like the turboXS type-s design

 

[steedspeed]

Steed- Cool design. Can you make a video where you are revving the throttle so that you can show how it reacts to pressure changes in the intake manifold?

I also noticed that it tends to flutterdump http://www.youtube.com/watch?v=jEUWEsqoWz8. Is it harder for it to open as you run more boost?

Flutterdump? hmm, not sure what you mean really but its been used on 1000+ hp V8 motors and people seem to like the fact that it actually lets all the air out in a hurry and dosn't let it bleed slowly out through a small hole like other BOVs which would still cause the turbo to slow down. In the video the driver on the dyno was closing the throttle gently as he wasn't there to show off the valve but rather was tuning the motor with Megasquirt. If you let off the throttle quick the valve reacts just as quickly having a large powerfull piston to actuate the valve. Even a small movement of the valve opens up a large port area because the ports extend all the way around the pipe with only 3 .19 inch wide solid sections holding the pipe together. At full open the ports are .5 inch wide x 3 inch diameter. If you listen to the sound it is similar to the sound you get when your pipes come apart under boost and the release of air is just as quick. Higher boost dosn't change the speed of reaction as that is simply done with vacuum from the manifold.

BTW I was at the awards ceremony at SEMA when you guys got the design award for the Synchronic valve. Looks like a nicely made piece.

 

[synapse]

Higher boost dosn't change the speed of reaction as that is simply done with vacuum from the manifold.

BTW I was at the awards ceremony at SEMA when you guys got the design award for the Synchronic valve. Looks like a nicely made piece.

Thanks.

In the video, it sounds like it is opening a few milliseconds later than it could, so it ch ch ch a few times before dumping. As I understand what you are saying, boost pressure keeps it closed? Is that from the vac/boost line only? If the geometry is what keeps it closed from the pressure inside the pipe, then you need to counterbias that actuating force keeping it closed. Otherwise, it will have a harder time opening quickly as boost increases.

What most people get wrong about the Synchronic BOV is that we're trying to do what everyone else does. Which is to dump as much volume as possible when the BOV opens. In actuality, our goal is to eliminate surge/flutter with fast actuation, and maintain boost pressure between shifts.

Since the Steedspeed design can obviously flow plenty of air, does the boost drop off significantly between gears? So that, in effect, you have to rebuild the boost for the next gear?

 

[steedspeed]

Thanks.

In the video, it sounds like it is opening a few milliseconds later than it could, so it ch ch ch a few times before dumping. As I understand what you are saying, boost pressure keeps it closed? Is that from the vac/boost line only? If the geometry is what keeps it closed from the pressure inside the pipe, then you need to counterbias that actuating force keeping it closed. Otherwise, it will have a harder time opening quickly as boost increases.

What most people get wrong about the Synchronic BOV is that we're trying to do what everyone else does. Which is to dump as much volume as possible when the BOV opens. In actuality, our goal is to eliminate surge/flutter with fast actuation, and maintain boost pressure between shifts.

Since the Steedspeed design can obviously flow plenty of air, does the boost drop off significantly between gears? So that, in effect, you have to rebuild the boost for the next gear?

Ah! I see what you mean. The response seems to be more about how its driven. Hard on and off throttle makes it move fast and gently moving the throttle makes it move slower. However, by the time its 1/4 open the valve is already flowing more than most valves out there so full open isn't really needed under all conditions. Boost dosn't drop off between gears as far as I can tell as the turbo is kept spinning very freely due to the huge ports and as soon as the valve closes again the turbo still running at full speed is able to provide boost instantly. I sell these valves mostly to the V8 guys running big turbos which need to dump way more air than most 4 cyl applications require.

 

[neox.286]

I didn't even realize that guy was from synapse lol

just wanted to say: props you guys, its a sweet bov


GAH I can't decide if I want to upgrade or not, or what to upgrade to! I guess we shall see if this turboXS holds up under my boost requirement next month....

 

[steedspeed]

I didn't even realize that guy was from synapse lol
just wanted to say: props you guys, its a sweet bov
QUOTE]

Lol! Something gave it away for me but you have to look really close...

yeah, I agree, its a nice quality looking piece.