Tial BOV vs Synapse BOV

Forcefed3 · 03-23-2011, 07:29 PM

Quote:

Originally Posted by Iwantm3

I've read a lot on issues like that all over internet

I never had a problem with my synapse bov. You dont have to worry about it being open at idle. If it was leaking boost while the turbos were spooling then you would have a problem.

MeinBMW · 03-23-2011, 07:40 PM

Quote:

Originally Posted by gbreeE90

You don't have to worry about it being open at idle.

This is true with any bov (or diverter valve for that matter) ... being open at idle or vacuum doesn't matter since the car is map based ... as soon as you see any boost it should close right up

If it is opening under full boost then it doesn't have a strong enough spring in it, or whatever it uses to keep it shut at pressure

bimmertt · 03-23-2011, 09:58 PM

Quote:

Originally Posted by Rysandro

I can almost guarantee the OEM DV's are dumping air back into the intake tubes at idle.

so if my BOV stays shut at idle, where is the air going? back to the turbos?

also, if you look at this video around 1:10 the bov stays open under load. I would think it would shut at this point.

Sniz · 03-23-2011, 10:12 PM

^ and that is why i dont like Synapse...that and other reasons. Its an open path for dirt and debris into your engine/intake w no filter. Screw that.

I love my Tial, sounds great and works great. Solidly built piece.

different car but the sound of the BOV is easy to hear.

possible335i2008 · 03-23-2011, 10:28 PM

Quote:

Originally Posted by Sniz

^ and that is why i dont like Synapse...that and other reasons. Its an open path for dirt and debris into your engine/intake w no filter. Screw that.

I love my Tial, sounds great and works great. Solidly built piece.

different car but the sound of the BOV is easy to hear.

+1 tial is the best hands down..synapse just has a good marketing campaign..look what brand every major tuner or builder uses..that should answer the question

Craig@SupremePower · 03-24-2011, 12:51 AM

very happy with my tial!

Former_Boosted_IS · 03-24-2011, 04:51 AM

I have TiAL and love it. In my turbo experience, it is the best BOV I have ever owned.

Clap135 · 03-24-2011, 05:38 AM

I run the Tial as well. IMO the synapse is a marketing gimmick

bulldog_yyc · 03-24-2011, 07:09 AM

so consensus is that we should be running the unpainted spring for the Tial correct?

badluckm3 · 03-24-2011, 09:18 AM

I was experiencing compressor surge with my greddyRS, switched to TialQ still had surge, switched to synapse and no more surge on my e36. I'm a fan of the synapse BOV, great permormance IMO. I have the anti-stall kit on mine to keep from sucking in anything unwanted at idle.

If/when, I start modding the 135i, I'd either go Forge DV's or Synapse.

Sniz · 03-24-2011, 10:23 AM

Quote:

Originally Posted by badluckm3

I was experiencing compressor surge with my greddyRS, switched to TialQ still had surge, switched to synapse and no more surge on my e36. I'm a fan of the synapse BOV, great permormance IMO. I have the anti-stall kit on mine to keep from sucking in anything unwanted at idle.

If/when, I start modding the 135i, I'd either go Forge DV's or Synapse.

interesting, what turbo/compressor housing?

I had forge DV's on my n54 and they worked flawlessly. I could 100% tell the difference in boost transitions from the stock DV's and it helped hold boost better than the stockers.

stratos_335 · 03-24-2011, 10:30 AM

My Synapse pre-load spring failed and was cut in two pieces. I'm now running my bov without pre-load spring. The spring damaged the piston but it was reusable as well

badluckm3 · 03-24-2011, 10:40 AM

Quote:

Originally Posted by Sniz

interesting, what turbo/compressor housing?

GT35R, T04S non-ported compressor housing, 1.06 A/R exhaust.

Granted if it was a ported housing, probably would not have experienced the surge, but just don't feel like spending another $250+ on that.

Big Tom · 03-24-2011, 12:37 PM

Quote:

Originally Posted by 330iSB

Mine doesnt seem to release boost on hard 1-2 shifts... When i put the clutch in it goes "pfft" and then when i get back on the gas in second it goes pshhh.

Thats probably due to the PROcede's superior bogfix during hard shifting. It simply doesn't release the boost during hard shifts, so thats why you don't hear anything...

Quote:

Originally Posted by domrep

My concern then comes with the sound...is there one that sounds "better" than the other? Although I know this can get pretty subjective has anyone heard both and maybe give some input on this?

If you want a really loud sound with a high quality solution, just buy a set of Forge's and disconnect the hoses going back to the intake.
The result will sound like this (my car):

Projekt_BooGie · 03-25-2011, 09:46 AM

Quote:

Originally Posted by Big Tom

If you want a really loud sound with a high quality solution, just buy a set of Forge's and disconnect the hoses going back to the intake.
The result will sound like this (my car):

and just to make sure this is clear to me, disconnecting the hoses that go back to the intake is totally safe right???? I'm a pretty firm believer (but I could be persuaded) that if something comes on the car stock there is a reason for it. And if I replace it I want to replace it with something that is as close to stock as possible.

Proper Motion LLC · 03-25-2011, 10:18 AM

Quote:

Originally Posted by ACEE

and just to make sure this is clear to me, disconnecting the hoses that go back to the intake is totally safe right???? I'm a pretty firm believer (but I could be persuaded) that if something comes on the car stock there is a reason for it. And if I replace it I want to replace it with something that is as close to stock as possible.

That reAson is Road noise

Former_Boosted_IS · 03-25-2011, 10:27 AM

Quote:

Originally Posted by ACEE

and just to make sure this is clear to me, disconnecting the hoses that go back to the intake is totally safe right???? I'm a pretty firm believer (but I could be persuaded) that if something comes on the car stock there is a reason for it. And if I replace it I want to replace it with something that is as close to stock as possible.

While I do respect that notion, this is a T-MAP car and it does matter one bit whether you use a BOV or DVs. None.

dbogner10 · 11-25-2011, 09:04 PM

Quote:

Originally Posted by stratos_335

My Synapse pre-load spring failed and was cut in two pieces. I'm now running my bov without pre-load spring. The spring damaged the piston but it was reusable as well

are you talking about the anti stall kit?? does anyone know about it??

ichi_ban · 11-25-2011, 11:43 PM

What's so bad about HKS? Cause it sounds like a whistle? Isn't HKS a solid piece?

Zeph · 11-26-2011, 10:26 PM

Quote:

Originally Posted by TeamSoloE93

What's so bad about HKS? Cause it sounds like a whistle? Isn't HKS a solid piece?

HKS is a good quality BOV but I personally don't like the high pitched squeel. I love the Synapse but I would get Tial otherwise...

Zeph

Fundahl · 11-27-2011, 11:37 AM

So no reported compressor surge with the Tial using a proper spring? (Based on vacuum?)

I'm stuck on Tial vs Synapse for my 1M.....

Pilo704 · 11-27-2011, 01:31 PM

Quote:

Originally Posted by ACEE

and just to make sure this is clear to me, disconnecting the hoses that go back to the intake is totally safe right???? I'm a pretty firm believer (but I could be persuaded) that if something comes on the car stock there is a reason for it. And if I replace it I want to replace it with something that is as close to stock as possible.

Yes this would be safe but you would need to block off the recurculation ports on the stock intact tubes. Vacuum caps with hose clamps will be fine.

03-23-2011, 10:12 PM	#26
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)	^ and that is why i dont like Synapse...that and other reasons. Its an open path for dirt and debris into your engine/intake w no filter. Screw that. I love my Tial, sounds great and works great. Solidly built piece. different car but the sound of the BOV is easy to hear. __________________
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03-24-2011, 12:51 AM	#28
Craig@SupremePower G.O.A.T.! 1000 Rep 74,998 Posts Drives: '18 GMC Yukon XL Join Date: Mar 2008 Location: New Jersey iTrader: (14)	very happy with my tial!
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03-24-2011, 04:51 AM	#29
Former_Boosted_IS Major General 307 Rep 5,175 Posts Drives: 4 Wheels Join Date: Aug 2007 Location: Planet Earth! iTrader: (15)	I have TiAL and love it. In my turbo experience, it is the best BOV I have ever owned.
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03-24-2011, 05:38 AM	#30
Clap135 Brigadier General 102 Rep 3,460 Posts Drives: 2009 N54 Join Date: Jul 2009 Location: Sticky's Mom House iTrader: (1)	I run the Tial as well. IMO the synapse is a marketing gimmick
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03-24-2011, 07:09 AM	#31
bulldog_yyc Major General 130 Rep 5,040 Posts Drives: GT3RS Join Date: Oct 2008 Location: probably work iTrader: (28)	so consensus is that we should be running the unpainted spring for the Tial correct?
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03-24-2011, 09:18 AM	#32
badluckm3 Private 10 Rep 89 Posts Drives: 11 335d, 12 X5D, 99 Mcoupe Join Date: Nov 2009 Location: Suffolk, VA iTrader: (0)	I was experiencing compressor surge with my greddyRS, switched to TialQ still had surge, switched to synapse and no more surge on my e36. I'm a fan of the synapse BOV, great permormance IMO. I have the anti-stall kit on mine to keep from sucking in anything unwanted at idle. If/when, I start modding the 135i, I'd either go Forge DV's or Synapse.
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03-24-2011, 10:30 AM	#34
stratos_335 First Lieutenant 36 Rep 332 Posts Drives: BMW 335i Join Date: Sep 2009 Location: Greece iTrader: (0)	My Synapse pre-load spring failed and was cut in two pieces. I'm now running my bov without pre-load spring. The spring damaged the piston but it was reusable as well
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11-25-2011, 11:43 PM	#41
ichi_ban Major 36 Rep 1,019 Posts Drives: X6 50i Join Date: Nov 2011 Location: FL iTrader: (24)	What's so bad about HKS? Cause it sounds like a whistle? Isn't HKS a solid piece?
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11-27-2011, 11:37 AM	#43
Fundahl Captain 8 Rep 704 Posts Drives: VO 1M, 300zx TT Join Date: Mar 2011 Location: Corpus Christi, Texas iTrader: (0)	So no reported compressor surge with the Tial using a proper spring? (Based on vacuum?) I'm stuck on Tial vs Synapse for my 1M.....
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