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Sep 19, 2009, 01:17 PM
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#31
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EvoM Guru
Personal Sales Rating: ( 4)
Join Date: Aug 2004
Location: Birmingham, AL - New Orleans
Posts: 4,766
Drives: Evo VIII/SVO Mustang/BMW E30 M3
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With the Synapse, there are no spring changes, no adjustments, nothing. You just put it in and go. We put 40psi to mine and it is dead silent - no leaks.
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Ted B. Spec JAM Long Rod 2.0L - Headway Performance CNC Head & Valvetrain - DI Intake Manifold - 75mm Hypertune TB - HTA3582R Twin Scroll T4 - Machined 12mm lift Billet Cams - MPFab twinscroll T4 Manifold, TBE, UICP, LICP - MPFab Race FMIC - TiAl 44mm WG - Skunk2 Pro Cam Gears - FIC Bluemax 1250cc - FullBlown Dual 255lph - Synchronic BPV - Spark Tech COP Ignition - TRE Trans - Shep TC + LSD - SPEC Graphite Dual Disc
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Sep 19, 2009, 01:21 PM
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#32
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Account Disabled
Personal Sales Rating: ( 0)
Join Date: Sep 2009
Location: San diego
Posts: 2
Drives: V///
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The synapse is great, but if you live in a emission nazi state like california seeing the synapse is a trip to the smog ref and heavy fee's the samco bov in black or forge in black. Are good if your going for stealth since the synapse is somewhat chunky.
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Sep 19, 2009, 01:25 PM
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#33
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Evolving Member
Personal Sales Rating: ( 6)
Join Date: Oct 2006
Location: Las Vegas
Posts: 471
Drives: GG IX SE
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Quote:
Originally Posted by whtrice
Depends on what application you use it in. Are you basically a stock setup or do you have a hardpipe for a UICP? For basically stock set ups you will require a recirc 1.25 inch adaptor piece to plumb it into your UICP hose. I tye wrap all the hoses and a "T" fitting is required to plumb into the boost signal line from your turbo outlet pipe. This is the one that goes to my boost control solenoid.
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yes, im still using the stock uicp and bpv
Quote:
Originally Posted by digitech
The synapse is great, but if you live in a emission nazi state like california seeing the synapse is a trip to the smog ref and heavy fee's the samco bov in black or forge in black. Are good if your going for stealth since the synapse is somewhat chunky.
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luckily we dont have to worry about that here haha
i will look into the synapse when i switch to e85 and start running more boost
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Sep 19, 2009, 06:06 PM
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#34
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Evolved Member
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Join Date: Mar 2004
Location: CA
Posts: 844
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I am thinking of going with Forge simply cause it is black and stealth, but all these "Gurus" talking about the Synapse is making me wonder. Although my engine bay is pretty stock looking.
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Sep 19, 2009, 08:46 PM
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#35
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EvoM Guru
Personal Sales Rating: ( 33)
Join Date: Mar 2006
Location: Tri-Cities, WA
Posts: 4,788
Drives: Evo IX MR
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Quote:
Originally Posted by ronitlancer
I am thinking of going with Forge simply cause it is black and stealth, but all these "Gurus" talking about the Synapse is making me wonder. Although my engine bay is pretty stock looking.
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Read up on the Forge. It holds boost fine, but it often causes bad flutter.
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Sep 20, 2009, 02:34 AM
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#36
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Evolved Member
Personal Sales Rating: ( 0)
Join Date: Mar 2004
Location: CA
Posts: 844
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the Synapse honestly confuses me 
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ETS Black 3.5" FMIC, Nisei IC Piping, Walbro Pump, Perrin Intake, Buschur TBE, Swift Springs -- UNTUNED
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Sep 20, 2009, 03:14 AM
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#37
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Evolved Member
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Location: CA
Posts: 844
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I did some more research on it, seems like it has flutter/jumpy issues just like any of the BOVs. half of the people responded with 100% no problems, and the other half said they get some surge, a lot of flutter on the highway, and a lot of bucking in part-throttle situations.
So what makes the Synapse better?
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Sep 20, 2009, 03:32 AM
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#38
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Silver Sponsor
Personal Sales Rating: ( 10)
Join Date: Sep 2009
Location: Haymarket, VA
Posts: 94
Drives: 04 SSL
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Quote:
Originally Posted by ronitlancer
What PSI are you running? Hows the driveability, what made you choose the Perrin?
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Oops I mis spoke. I am running the Samco. Only about 25 psi, but the drivability is a bit better and I hate the sound of BOV's (its as quiet as stock and fits like stock). It is known to hold higher psi well. Running medium spring. If you have an aftermarket ignition there is no cruise flutter as well!
As far as thje Forge, I suspect that it only gets terrible reviews because the normal owner is too lazy to scroll through the million possible settings to get it tuned properly. It would only flutter a tad during cruise on the girlfriends car.
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Last edited by SpoolinUp; Sep 20, 2009 at 03:36 AM.
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Sep 20, 2009, 08:16 AM
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#39
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EvoM Guru
Personal Sales Rating: ( 4)
Join Date: Aug 2004
Location: Birmingham, AL - New Orleans
Posts: 4,766
Drives: Evo VIII/SVO Mustang/BMW E30 M3
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Quote:
Originally Posted by ronitlancer
So what makes the Synapse better?
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It doesn't flutter, creates no idle issues, needs no adjustment, and won't leak. There are three possible vacuum port arrangements. Find the one that works best for you (do a search) and you're done.
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Ted B. Spec JAM Long Rod 2.0L - Headway Performance CNC Head & Valvetrain - DI Intake Manifold - 75mm Hypertune TB - HTA3582R Twin Scroll T4 - Machined 12mm lift Billet Cams - MPFab twinscroll T4 Manifold, TBE, UICP, LICP - MPFab Race FMIC - TiAl 44mm WG - Skunk2 Pro Cam Gears - FIC Bluemax 1250cc - FullBlown Dual 255lph - Synchronic BPV - Spark Tech COP Ignition - TRE Trans - Shep TC + LSD - SPEC Graphite Dual Disc
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Sep 20, 2009, 02:40 PM
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#40
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Evolved Member
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Location: CA
Posts: 844
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Quote:
Originally Posted by Ted B
It doesn't flutter, creates no idle issues, needs no adjustment, and won't leak. There are three possible vacuum port arrangements. Find the one that works best for you (do a search) and you're done.
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In the two major Synapse threads I found, there were quite a few people experiencing both flutter and bucking.
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ETS Black 3.5" FMIC, Nisei IC Piping, Walbro Pump, Perrin Intake, Buschur TBE, Swift Springs -- UNTUNED
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Sep 20, 2009, 03:03 PM
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#41
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Evolved Member
Personal Sales Rating: ( 36)
Join Date: Apr 2004
Location: ☼ Florida ☼
Posts: 5,791
Drives: EVO METH MACHINE
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Forge RS. I have tried MANY and the adjustability makes a huge difference(holds boost great)
I haven't tried the synapse, however, it does sound good.
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Sep 20, 2009, 03:17 PM
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#42
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Evolved Member
Personal Sales Rating: ( 17)
Join Date: Sep 2004
Location: Tucson
Posts: 5,648
Drives: 09 MB C63 AMG, 07 VW GLI Turbo(DSG),06 Evo IX SE. 95 Eclipse GSX... Evos gone!
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Quote:
Originally Posted by ronitlancer
Sort of hard to search for, but I am trying to find info on people running recirc BOVs with 28PSI or higher. How its holding the boost, if any sort of leak-stop/etc was needed. And how their driveability is.
I don't wanna go VTA cause the sound is just too much for me, and generally has worse driveability then Recirc.
Can users with a Recirc running 28+ give me some feedback on the sound/driveability/boost-holding of thier BOV and what type it is. Thanks  |
Please read, I created this topic a few years ago specifically with the info you are looking for:
stock Evo 9 BOV leaks exactly at 26-27psi
Carlos
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Sep 20, 2009, 03:19 PM
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#43
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EvoM Guru
Personal Sales Rating: ( 4)
Join Date: Aug 2004
Location: Birmingham, AL - New Orleans
Posts: 4,766
Drives: Evo VIII/SVO Mustang/BMW E30 M3
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Quote:
Originally Posted by ronitlancer
In the two major Synapse threads I found, there were quite a few people experiencing both flutter and bucking.
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There are three possible ways to connect the vacuum ports. Find the best way for you, and it should be perfect. Those with smaller turbos tend to use a different setting than those with larger turbos, etc. I found perfection with A+B to the manifold and C to the UICP.
Quote:
Originally Posted by Evoryder
Forge RS. I have tried MANY and the adjustability makes a huge difference(holds boost great)
I haven't tried the synapse, however, it does sound good.
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I had the Forge RS and ditched in favor of the Synpase.
FWIW, I realized two issues with the Forge design. The first that the tightest setting is required for over 30psi boost, and Forge states that ~34psi is the maximum it can hold regardless. The second is I found that setting gave the poorest overall drivability. The Synapse won't leak at 40+ psi and gives absolutely transparent drivability.
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Ted B. Spec JAM Long Rod 2.0L - Headway Performance CNC Head & Valvetrain - DI Intake Manifold - 75mm Hypertune TB - HTA3582R Twin Scroll T4 - Machined 12mm lift Billet Cams - MPFab twinscroll T4 Manifold, TBE, UICP, LICP - MPFab Race FMIC - TiAl 44mm WG - Skunk2 Pro Cam Gears - FIC Bluemax 1250cc - FullBlown Dual 255lph - Synchronic BPV - Spark Tech COP Ignition - TRE Trans - Shep TC + LSD - SPEC Graphite Dual Disc
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Sep 21, 2009, 02:04 PM
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#44
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Evolved Member
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Location: CA
Posts: 844
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I went ahead and ordered the Synapse in favor of you Gurus
We will see how it works for me.
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ETS Black 3.5" FMIC, Nisei IC Piping, Walbro Pump, Perrin Intake, Buschur TBE, Swift Springs -- UNTUNED
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Sep 21, 2009, 02:11 PM
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#45
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Evolved Member
Personal Sales Rating: ( 36)
Join Date: Jan 2006
Location: NW Arkansas -- Land O' Twisties
Posts: 959
Drives: like I've got a pair.
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I'm recirculating the Synapse BOV with 39 psi on the Red.
Rock solid!
C port to the turbo outlet pipe + A port to the intake mani + B port blocked.
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BR 2.0, Stage 3 head, FPred @ 39psi, Ptd/ctd Exh. mani, Ported Intake mani, WORKS 76mm DP w/ RTP, Tanabe Touring Medallion, Apexi filter, APS twin-vent, Aperture II TB, Cossie M2's, JAM lifters, BR Double Pumper, PTE 1200's, AMS fuel rail, Sparktech non-CDI, ETS LICP, Perrin FMIC, ETS UICP, Irragi HO Alt, Hallman Pro RX, Beatrush + CROX II, Whiteline kit, Tanabe Pro 5's, WORKS rear strut bar, LC-1, Defi's, JDM rear, UK badge, SE lip, Volk's, 522/473 on E85.
Tuned by Mellon
Last edited by Tsurugi-san; Sep 21, 2009 at 02:17 PM.
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30, adjustments, bov, bpv, evo, forge, forum, hose, perrin, psi, race, recirc, recirculating, rs, synapse  |
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