I just got mine a week or so ago, I installed it just like the stock DV and it seems to be working right around the same as the stock DV. I have only the B-port connected and the A-Port capped off. The sound is slightly different, but overall im happy with it!

 

Is the older (larger) design not available anymore? Sounds like it worked better..

 

So in a recap.

I'm currently running an MR valve, stock 7 turbo at 26psi, get decent bucking from the stock valve at higher rpm transition between boost/vac.
Plus suspect it leaks a little at that boost.

Should I buy this valve and trust that it'll hold a stock frame turbo no larger than a Green at 30psi with good drivability?

Cheers.

 

its either this valve or based on cbrd's experience, the cobb xle bpv. the synapse definitely bucks less than stock and holds boost.

 

Good to know, once I get my car running again and see how the bov works with the stock spring and go from there...

 

in my experience between the 2 valves, the new dv worked WAY better than the older / large unit.

I tried the larger unit for ~1 week before i swapped it out.

what gets me, is how sensitive these valves are & everyone finds differrent set-ups for their driving style.

 

I'm still rocking the old, large unit with zero flutter/surge. I may try the new design just for the hell of it, but ya Aby, seems like everyones config is extremely different.

 

If anyone is interested I will have an old style larger Synapse bov for sale soon...I'm out of town at the moment but Ill be putting up a For Sale thread for it next week...

 

Guys, please do not cap any ports, that acts like a pneumatic brake. Any unused port should always be VTA, no need to filter either.

Aby, do you have any bandwidth for some serious MBT work, has to be under NDA?

 

Good to know...thanks for posting Synapse...

 

Lastly guys, don't share the vac/boost control line to the BOV/DV with any type of control valve. This includes MBCs and BCSs.

Your standard OEM DV/BOV, or aftermarket unit such as Tial, Turbosmart, Forge, etc. have such slow response times and are so heavily sprung that they typically are not affected by this. In fact, we've had one of the local genuises here in San Diego telling their customers that the Synchronic units don't work and that they open up under boost and flutter under boost. When in fact, he was plumbing BCS solenoids and MBCs to vacuum and sharing the same line with the Syn BOV/DV control line. You can imagine what would happen once the control valve would start to PWM or vent pressure from the line.

http://www.youtube.com/watch?v=2XFqd...layer_embedded

 

Synapse - No response from my PM ???? Are you still willing to help locals ?

 

did the hose that came with your kits fit the factory boost vacuum source that was attack to the stock dv via a rubber hose? I just installed mine today and im running b only.

 

Sorry Chris, we were in the dungeon last week on research topics, someone will contact you today to schedule

It should fit right in. Most Evo guys run B only, so you should be fine.

 

so i should connect directly to the intake manifold?

also is it ok if one of the adaptor still moves when i've clamped it? will it leak