Synapse Hybrid Bov Review

Be happy mine runs like SSSSSHHHHHHHIIIIIIIIITTTTTTT!!! I have a video that I will post tonight. I have both vac ports on top to the manifold nipple where the stock one goes, and the boost only port goes right to the compressor cover where the wastegate line comes from. Any ideas whats up? I am going lean as hell and sputtering while on the gas after a shift.

Are you talking about the synapse or the HKS? Both vac ports? I only have one!!! (huh)

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Are you running VTA?

Yes HKS was fine this way.

Synapse BOV. Top 2 ports connected to oem BOV line. 3rd port to compressor output to wastegate. Anti-stall kit.
First video shows the bog and bumble when reving in neutral.
Second video shows bad compressor surge.
Third video shows the car driving on a 2-3 shift, bogging, bucking and having an AFR of 17-19!


 
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Then run it in recirc. I ran mine in VTA for about ten minutes, kept stalling. Plugged in the recirc and it was fine. No offense, but I don't understand why you insist on running VTA when you know that running recirc will work just fine.
 
Yes HKS was fine this way.

Synapse BOV. Top 2 ports connected to oem BOV line. 3rd port to compressor output to wastegate. Anti-stall kit.
First video shows the bog and bumble when reving in neutral.
Second video shows bad compressor surge.
Third video shows the car driving on a 2-3 shift, bogging, bucking and having an AFR of 17-19!



lol dma that bad, why is it doing that?
 
I have an inlet pipe that will not work with recirc right now. Do you have the anti-stall kit they sell? With it the car should run just fine. My HKS was fine the morning I put this on. My car is tuned to run VTA so its a non issue. There is somthing fubar with the valve in my opinion.
 
I have an inlet pipe that will not work with recirc right now. Do you have the anti-stall kit they sell? With it the car should run just fine. My HKS was fine the morning I put this on. My car is tuned to run VTA so its a non issue. There is somthing fubar with the valve in my opinion.
Negative on the anti stall. However, when I did run it VTA, it was fine when running and after it had been running, just on start up it was difficult.
 
Mine is working great. I have my third port open. Only attached the first two ports, to the oem bov line. Didnt mess with anything else. Pulls hard.
 
My stocker leaked!!! I gained one solid psi and spike at a solid 20. With the stocker, it was spiking all over the place, 17, 18, 19...but now I get a solid 20 and settles down to 16.6.

In addition, the boost builds up instantly between shifts now. With the stock valve, the boost built up progressively in between shifts. The stock valve reacts too slow and leaks...

Definitely more responsive since I upgraded my BPV!!!

Upgrade that BPV!!! (2thumbs)

I also wanted a Synapse, but I don't like to be the Guinea pig for new applications... (lol2)

I did replace my bpv to a turbosmart, but i also installed my ETS at the same time so i don't know if i gained boost from the valve or ic. Guess i'll have to do some testing. Even with these mods i only gained about .5 - 1 pound of boost which doesn't seem like much to me. Am i expecting too much? boost went from a steady 15.5(hold) to a 16 - 16.4(hold). I had a cai before the valve and ic install. I was considering replacing my turbosmart for a Synapse...
 
I dont know what to tell you guys. I picked 1-2psi across the board easily. Up top maybe even 2-3psi. Holds good.
i was real glad to see your setup, I have the same fmic you have. any problems with the install ? you still like it ??
 
Mine is functioning more normally now. Don't know if I'm giving the valve a thumbs up yet, but I'm not pissed now.
 
so i went ahead and hooked up the third nipple per their instructions. Exactly like they suggest. Car runs just as good if not better than before. I made sure to have the vacuum t's pointing the right way and all.

Car holds boost so much better now. Its even better than the forge with the red spring. I love it. Looks, sounds and performs the part. Good stuff.
 
we will be selling these soon. i had not listed them previously because A) was not sure they'd fit and B) wanted to make sure they worked well. driver311 has been kind enough to test these out for us and i'll be listing a package deal on the website in the next day or so.
 
we will be selling these soon. i had not listed them previously because A) was not sure they'd fit and B) wanted to make sure they worked well. driver311 has been kind enough to test these out for us and i'll be listing a package deal on the website in the next day or so.
sweet, I want one of these. Please post when they are available for the MS3. ProtegeGarage rocks!!! (yippy)
 
311......Synapse is claiming a 28hp increase with this video.......does that seem accurate.......more that a 10% hp increase over stock?

http://video.google.com/videoplay?d...l=1&start=0&num=10&so=0&type=search&plindex=0

I would say most definately. Think about it. Every pound of boost is worth 10whp on this car up to 20psi. So if Im holding 3more psi at 5700rmps then you have your answer. Before I was holdiing 11psi at 6k, and now Im holding 14psi at 6k. The forge couldnt even do that. Im very happy with this product and recommend that you swoop one up through Ken over at Pg. He continues to try and offer the best products at great prices. Thanks PG> (friday)
 
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