Post your Synapse DV config and results
May 4, 2014, 06:29 AM
#496
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May 5, 2014, 11:17 AM
#498
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I am looking into getting one of these, but from reading through many of the pages here it seems like hardly anyone has been able to get this dv to work the way they want it to... Now I am reluctant and may just crush my ix dv.
May 11, 2014, 04:37 PM
#499
Great DV. After experimenting with different settings for like a year, lol, this is what works for me:
Mil Spec softer spring, push mode, no preload, and both ports (A+B) hooked up to a boost reference.
Car is an 03' with a ported BBK Full, 26 psi, yada yada. Tried DV in pull mode (like stock, no preload) with port A hooked up and it would leak a little resulting in slower spool. With port B hooked up (also no preload) it would spool quicker but flutter like crazy part throttle.
It's all trial and error to get this DV to work properly with your configuration. Start by looking at the diagram in the manual and go from there. Hope that helps.
Mil Spec softer spring, push mode, no preload, and both ports (A+B) hooked up to a boost reference.
Car is an 03' with a ported BBK Full, 26 psi, yada yada. Tried DV in pull mode (like stock, no preload) with port A hooked up and it would leak a little resulting in slower spool. With port B hooked up (also no preload) it would spool quicker but flutter like crazy part throttle.
It's all trial and error to get this DV to work properly with your configuration. Start by looking at the diagram in the manual and go from there. Hope that helps.
May 16, 2014, 08:11 PM
#500
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May 25, 2014, 11:11 AM
#502
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I just installed my 2nd one a few days ago. Had one on my Evo 9 before, installed one on my X a few nights ago. Used the softer spring that came extra. Port B only, push mode. First try, worked like a charm. No flutter or any weird bucking.
May 25, 2014, 11:15 AM
#503
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http://www.synapseengineering.com/su...ual_webres.pdf
Push mode would be installed just like the factory BOV, pull mode is reversed.
May 25, 2014, 12:27 PM
#504
Page 2
http://www.synapseengineering.com/su...ual_webres.pdf
Push mode would be installed just like the factory BOV, pull mode is reversed.
http://www.synapseengineering.com/su...ual_webres.pdf
Push mode would be installed just like the factory BOV, pull mode is reversed.
Last edited by ODUB; May 25, 2014 at 12:29 PM.
Aug 4, 2014, 06:16 PM
#507
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My car came with DV. It was tuned in this orientation with port B only A vented
I get bucking and surge so I flipped it and it seemed to run alot smoother on let offs but it has flutter when im all the way in it. Now since the car was tuned in that position does flipping the valve change afr's at all? I don't have a boost gauge so I can't tell if boost is changing. Still pretty confused with this valve.
I get bucking and surge so I flipped it and it seemed to run alot smoother on let offs but it has flutter when im all the way in it. Now since the car was tuned in that position does flipping the valve change afr's at all? I don't have a boost gauge so I can't tell if boost is changing. Still pretty confused with this valve.
Aug 4, 2014, 06:40 PM
#508
what does port b only a vented?
no, changing the DV won't change anything on the tune
keep adjusting it until it doesn't flutter anymore on part throttle
if it flutters when you're all the way in it then it is likely a wastegate issue, not a DV issue
no, changing the DV won't change anything on the tune
keep adjusting it until it doesn't flutter anymore on part throttle
if it flutters when you're all the way in it then it is likely a wastegate issue, not a DV issue
Aug 10, 2014, 02:55 PM
#509
I just switched to speed density and I have the Mil-Spec spring installed in my DV. I can get some flutter especially during partial throttle. I can not remember I much preload I have on it at the moment.
what configurations are you guys running with speed density?
I have a BBK Full, Muse Short route UICP, custom 3.5" intake and the rest of mods are in my sig.
what configurations are you guys running with speed density?
I have a BBK Full, Muse Short route UICP, custom 3.5" intake and the rest of mods are in my sig.
Nov 12, 2014, 10:15 AM
#510
I want to bring this thread back to life mainly to point out something about the turbo spool behavior with this DV. I have tried both push and pull mode and for me the one that delivers the best spool is pull mode, port A, spring that came installed with and no preload, of course this would produce flutter at low boost but the point that I am trying to make is that this DV can help in spool of the turbo. (I have a BB FP black and GSC S2 cams)
I ended up using pull mode both ports connected to a boost/vacuum source with spring that came with DV, 2 turns of preload. I find the yellow spring is too soft making it a bit slow to respond in pull mode, I think it was leaking air to the intake and making it lost spool.
I ended up using pull mode both ports connected to a boost/vacuum source with spring that came with DV, 2 turns of preload. I find the yellow spring is too soft making it a bit slow to respond in pull mode, I think it was leaking air to the intake and making it lost spool.
Last edited by pupo; Nov 12, 2014 at 11:27 AM.