SSQV vs Tial vs Synchronic

Fundahl · 11-24-2011, 01:18 PM

I'm looking to finally get a charge-pipe for methanol injection and other reasons. I'm having trouble deciding on a Bypass Valve.

I have experience with SSQVs on my 300zx and they are great but still have some flimsy/plastic parts internally, and I wonder if the Synapse could be an improvement.

I don't want compressor surge or fluttering, and I do want the best boost response possible.

I've heard great things about Tial, but it usually is kind of a hard-headed "It's best because it's made in USA and used forever" type of answer.

Synapse is newer in the game, and their engineering articles and video testing leaves me curious.

Which valve would you choose and why? Thanks!

EJ_3 · 11-24-2011, 01:43 PM

Tial or SSQV 4. Synapse stays partially open under light load for some odd reason. I have the HKS SSQV 4 and NEVER had an issue at all, and man does this thing sounds great. I say Tial just because of it rep and reliability.

EJ_3 · 11-24-2011, 03:02 PM

Quote:

Originally Posted by Railgun

Because it's under vac...

The Synapse is going to respond much faster than the SSQV. I've had both in another car. I didn't like the sound at all from the SSQV at all...

But the point is response, which is where the Synapse has it beat.

It's going to stay open until you have some pressure to close it. That's the point. There's no harm in it being open under vac.

word...

Chefcg1 · 11-24-2011, 05:06 PM

i know not many people on this board talk about it but my favorite bov is greddy type s, i have used both the tail and the hks one and i still would pick the greddy type s one every time. holds boost great and sounds great! my 2 cents.

Fundahl · 11-24-2011, 07:35 PM

Thanks for all the feedback guys! The Synapse being open under vacuum is actually explained in their engineering article. My SSQVs do the same thing. Although if there is actual vacuum in the charge-pipe, I'd like to use the filter attachment to keep from sucking in debri.

So Railgun, you've tried the SSQV and Synchronic and found the Synchronic to respond faster? Have you ever tried a Tial valve? I've tried a Greddy type S on my sr20det 240zx, but could not get the damn thing to work right no matter what spring, washers or adjustment to the top allen nut I tried.

turb0mik3 · 11-24-2011, 08:19 PM

TIAL for sure.

EJ_3 · 11-25-2011, 06:09 AM

Quote:

Originally Posted by Railgun

Only ones I`ve had experience with are those two. The HKS was the first one I picked up and while it worked well, after some additional upgrades, I went with the Synapse and it seemed to perform better. It definitely responded faster and wasn`t as obnoxious from a sound perspective.

I take it that that was probably the SSQV 3, not 4.

Sniz · 11-25-2011, 12:39 PM

Tial is my choice. Bought a brand new one for my turbo M3. Sounds great but thats not the point here. You want something well built and reliable. Tial fits the bill every time for that. Check out many many of the high HP cars out there, all using Tial. Underground Racing.....tial. HPF I think uses Tial too.

my Tial WG has been working great for years and years, no issues.

11-24-2011, 01:18 PM	#1
Fundahl Captain 8 Rep 704 Posts Drives: VO 1M, 300zx TT Join Date: Mar 2011 Location: Corpus Christi, Texas iTrader: (0)	SSQV vs Tial vs Synchronic I'm looking to finally get a charge-pipe for methanol injection and other reasons. I'm having trouble deciding on a Bypass Valve. I have experience with SSQVs on my 300zx and they are great but still have some flimsy/plastic parts internally, and I wonder if the Synapse could be an improvement. I don't want compressor surge or fluttering, and I do want the best boost response possible. I've heard great things about Tial, but it usually is kind of a hard-headed "It's best because it's made in USA and used forever" type of answer. Synapse is newer in the game, and their engineering articles and video testing leaves me curious. Which valve would you choose and why? Thanks! Last edited by Fundahl; 11-24-2011 at 01:25 PM..
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11-24-2011, 01:43 PM	#2
EJ_3 Colonel 371 Rep 2,839 Posts Drives: e92 335i, e34 525i & e60 530i Join Date: Aug 2011 Location: N Las Vegas iTrader: (13) Garage List 2007 BMW 335i [8.34] 2016 Ram 1500 Sport [8.00] 1994 BMW 525i [10.00] 2007 BMW 530i [8.66]	Tial or SSQV 4. Synapse stays partially open under light load for some odd reason. I have the HKS SSQV 4 and NEVER had an issue at all, and man does this thing sounds great. I say Tial just because of it rep and reliability. __________________ click here for mods
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11-24-2011, 05:06 PM	#4
Chefcg1 Major 69 Rep 1,137 Posts Drives: 2008 BMW 335i Join Date: Apr 2009 Location: Mount Airy, NC iTrader: (6)	i know not many people on this board talk about it but my favorite bov is greddy type s, i have used both the tail and the hks one and i still would pick the greddy type s one every time. holds boost great and sounds great! my 2 cents. __________________ 2008 335i coupe AW 6AT, RB Turbos, PROcede 2.5 V5, Alpina Flash, Injen Intake, VK MW DP . Helix IC, Vishnu PnP Meth(M10 nozzel), M3 sides, OEM Aero Lip, VMR V710 Midnight Blue, LUX H8, HID Fogs, M3 front bits, D2 Coilovers, Whiteline Rear Bushing inserts, Custom M3 Steering Wheel, Cyba scoops, M2 Performance Exhaust
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11-24-2011, 07:35 PM	#5
Fundahl Captain 8 Rep 704 Posts Drives: VO 1M, 300zx TT Join Date: Mar 2011 Location: Corpus Christi, Texas iTrader: (0)	Thanks for all the feedback guys! The Synapse being open under vacuum is actually explained in their engineering article. My SSQVs do the same thing. Although if there is actual vacuum in the charge-pipe, I'd like to use the filter attachment to keep from sucking in debri. So Railgun, you've tried the SSQV and Synchronic and found the Synchronic to respond faster? Have you ever tried a Tial valve? I've tried a Greddy type S on my sr20det 240zx, but could not get the damn thing to work right no matter what spring, washers or adjustment to the top allen nut I tried.
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11-24-2011, 08:19 PM	#6
turb0mik3 241 Rep 2,781 Posts Drives: E90 335i Racecar Join Date: Jan 2010 Location: San Diego, CA iTrader: (1) Garage List 2010 BMW 335i [8.90]	TIAL for sure. __________________ HG Motorsports \| Motiv Motorsport \| Sparta Evolution \| BBS Motorsports \| Sabelt \| JRZ \| NASA ST1 SoCal --- 554whp/487wtrq --- 3200lbs <<YouTube Channel w/ Race Videos>>
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11-25-2011, 12:39 PM	#8
Sniz Lieutenant General 654 Rep 10,587 Posts Drives: e92 335 - gone // e36 M3 turbo Join Date: Mar 2007 Location: Ellicott City, MD iTrader: (1)	Tial is my choice. Bought a brand new one for my turbo M3. Sounds great but thats not the point here. You want something well built and reliable. Tial fits the bill every time for that. Check out many many of the high HP cars out there, all using Tial. Underground Racing.....tial. HPF I think uses Tial too. my Tial WG has been working great for years and years, no issues. __________________
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