there is something to "T" it off from there? or u mean drill into that? i currently have it "T" into the boost source coming from the turbo, and i think that migh be y i am getting partial throttle isssues in 5th cause my boost controller is hooked up to that also

 

There should be a nipple on the j pipe with a boost line you can just T into that

But also if your interested in just getting rid of port C shoot me a PM and we can get it done

 

The line Synapse is talking about goes to the factory EBC. You could use this, most are suggesting not too because the boost controller is a controlled leak. It may work fine for some (like Devons Evo) but not others.

 

oh ok i kno what he is talking about. thats where i am plugged into and yeah issues in 5th

 

Man I really want to try one of these out on my car. What intake is that on your car? I like it!

 

You talking to me Scheides bro? If so, English Racing fabbed me one when they switched me to speed density. It's a 3" ss pipe with a 3" K&N filter. I'll prolly switch to an Amsoil one though because I'm a dealer. Or maybe the 3.125" Perrin but I'd have to make it fit somehow.

 

I'm assuming you work for Synapse?

If so, it sounds like there is a new design with no port C? Is port C designed into the underside of the DV where it connects to the UICP or is it eliminated altogether?

The flutter issues at part throttle are occuring for some people because of the pressure differential from port C's sournce to post throttle body. There is more pressure at the compressor outlet, for example, than port throttle plate, when at partial throttle. Port C is opening the DV, while A+/B is closing it. When the pressure builds enough in C to overcome A+/B, then the valve reacts. This happens over and over causing the flutter.

The solution is to either plum port C to a location that may be less of a differential, such as the UICP, or tighten or loosen the DV's internal spring. Tightening it will disallow for the port C pressure to overcome A+/B + spring, so it won't ever react...loosening it will allow the DV to open very soon to the pressure differential and stay open until a set pressure differential. I would personally opt for the former, so you keep nice boost response at partial throttle.

 

I updated my first post to include my impressions on all port combos.

 

Sounds like a plan. I'm going to try and tighten up the preload and see what happens. This sounds very logical. I will also of course keep track of how much I tighten the preload.

 

I have this bov and its great. drivability is equal to or greater than stock and on recirc you can hear it but its quiet enough to not be ricey or annoying, holds boost like a champ.

 

Post your results back wizzo! If what l2r99gst is saying is true, I could certainly try tightening my preload (although always heard others loosening it). Anyway good info to try! If it works I'll rock A+B because it felt like it vented the best that way.

 

I went from a+b to just a and now just b. Just b is the best but still not the best. Maybe adjusting the preload will help though. I will give you an update. Note: I also have port c connected.

 

Yes i work at Synapse.
On the new BOV Port C gone. the function of Port C will be all internal. The benefits i see with this set up is you don't have to worry about tapping a boost source and the BOV functions exactly the same as it should. Any time you tap or T into a boost line you run the risk of it leaking or potentially creating a boost leak. It becomes just another thing you need to check in the future. If you eliminate Port C and the BOV still functions the same if not better i see it as a win win situation.

-Devin

 

I understand port C is gone, but is it now plumbed so that it gets it's source from the connection to the UICP?

So, my question is, is there still a chamber in the design that gets postive pressure to open the DV (what port C used to connect to), but now gets that pressure from the connection to the UICP?

Hopefully you understand my question, as it may be bit difficult to understand. Basically, is the function of port C and the corresponding chamber gone or is just port C gone and the pressure is now automatically taken from the UICP, so people don't have to tap into a boost source?

 

I understand and it would make sense (if port C is still there) for it to get its boost source from the chamber it's sitting right on top of (uicp)