Installed ercp+synapse bov... expected it to be louder?!?!?!?!?!

GI335I · 11-07-2012, 02:32 PM

Well I heard that tial q are the quietest bovs and sqv's are the loudest, and somewhere in between are the synapse bovs.
I brought mine after seeing that video on youtube:

So I have installed it today and I'm.... dissapointed. It has nothing to see with that video.
Seriously I have expected it to be louder. I mean i can barelly hear it even with windows down. I first thought that there was something wrong with the installation so I rechecked on everything and everything is perfectly in place.
Is the bov that quiet or am I the only one experiencing this?!
And is there anything that i can do to make it louder?
I dont have a surge so I didnt feel like tweaking it, or should I?
I dont have a boost leak.
Btw Im not stock, I'm have a JB+, so god knows if you can hear it @ stock boost...

When i first got it:

Hearing it after installing it:

LOL

farb · 11-07-2012, 02:58 PM

I have ER CP and tial bov and it is very noticeable with the windows down if I shift up at any rpm higher than 3K.

GI335I · 11-07-2012, 03:22 PM

just need people who installed synapse bovs on their cars to chime in..

HighPSI · 11-07-2012, 03:38 PM

its very obvious that video has enhanced audio

Jeff@TopGearSolutions · 11-07-2012, 03:45 PM

Jb+ isn't that much boost to blow off. You would notice an increase in noise with running more boost.

You may want to look into a JB4 or another tune that runs more boost.

PS That video is severely enhanced, I believe the Microphone is in the engine bay. Nobody's car sounds like that in real life driving around.

Ace_HollyWood · 11-07-2012, 03:46 PM

I have the ER with synapse - which vac hoses are you using?

idrift4wd · 11-07-2012, 03:57 PM

synapse DEF uses a mic closer to the engine. making it sound louder. no way you can hear that much engine noise from the interior with windows closed.

they got you! But if you want it louder. take off engine cowl and get a set of intakes. super BOV and turbo sound

GI335I · 11-07-2012, 04:30 PM

Quote:

Originally Posted by Ace_HollyWood

I have the ER with synapse - which vac hoses are you using?

Well the bov came in with silicone vac hoses plugged from both of the synapses ports to a plastic Y pipe then from the Y pipe to the manifold
so I just plugged it into the manifold.

Quote:

Originally Posted by idrift4wd

synapse DEF uses a mic closer to the engine. making it sound louder. no way you can hear that much engine noise from the interior with windows closed.

they got you! But if you want it louder. take off engine cowl and get a set of intakes. super BOV and turbo sound

I have installed dci too.. Ill try removing the cowl, but is it recommended in locations where it could rain? I heard that you shouldn't remove the cowl if there's rain?

TommyLights · 11-07-2012, 04:44 PM

I have one. Definitely very loud, but I am running 18psi.

GI335I · 11-07-2012, 05:37 PM

Quote:

Originally Posted by tomz_335i

I have one. Definitely very loud, but I am running 18psi.

Im running 13.25 psi.. anyways is your car 6mt or auto?

Jeff@TopGearSolutions · 11-07-2012, 06:38 PM

Quote:

Originally Posted by GiorgioIr

Well the bov came in with silicone vac hoses plugged from both of the synapses ports to a plastic Y pipe then from the Y pipe to the manifold
so I just plugged it into the manifold.

I have installed dci too.. Ill try removing the cowl, but is it recommended in locations where it could rain? I heard that you shouldn't remove the cowl if there's rain?

You should keep the cowl on. Without it, water will run down into the engine and turbo's.

TommyLights · 11-07-2012, 06:54 PM

Quote:

Originally Posted by GiorgioIr

Im running 13.25 psi.. anyways is your car 6mt or auto?

It's a 6 speed. That definitely helps.

Hisam135i · 11-07-2012, 07:03 PM

LOL so badly enhanced in the video haha

SfValley335i · 11-07-2012, 07:40 PM

I sold my synapse bov because it was too loud. Its crazy loud (like a bus)at 15psi, and around 10psi its pretty loud. I was able to hear it even shifting at 2k rpm... gets annoying after awhile.

tcw · 11-07-2012, 09:39 PM

I've been riding with no cowl for about 6 months. Rain and shine, stills runs fine.

rush jamaica · 11-07-2012, 10:45 PM

U need to the active bov and charge pipe sounds good

GI335I · 11-08-2012, 01:21 AM

Quote:

Originally Posted by tomz_335i

It's a 6 speed. That definitely helps.

wish mine was 6speed, Ill have to convert mine to manual then. Not just because of the bov, I just prefer the 6 speed, its better at everything.

Quote:

Originally Posted by SfValley335i

I sold my synapse bov because it was too loud. Its crazy loud (like a bus)at 15psi, and around 10psi its pretty loud. I was able to hear it even shifting at 2k rpm... gets annoying after awhile.

I wanted this! I never hear it under 3k rpm.. btw is your car 6speed or auto?

Quote:

Originally Posted by tcw

I've been riding with no cowl for about 6 months. Rain and shine, stills runs fine.

oh okay thanks

Quote:

Originally Posted by rush jamaica

U need to the active bov and charge pipe sounds good

I just brought the ercp and synapse bov, I'm not a money tree haha

stratos_335 · 11-08-2012, 09:30 AM

Install the diverter flange without the diverter hose. It will make it sound louder. I'm not home now to post a pic... Without the diverter flange the synapse BOV doesn't sound much

georgelb · 11-08-2012, 10:11 AM

Quote:

Originally Posted by GiorgioIr

wish mine was 6speed, Ill have to convert mine to manual then. Not just because of the bov, I just prefer the 6 speed, its better at everything.

If you have an auto you're really only going to hear it when you let off the accelerator and the throttle closes. That said, I'm not sure about 13psi, but one of my DV recirculation hoses ripped so I just pulled them both off and plugged the intake side, and at 18psi with open DVs and DCI it's as loud as that video when I let off the accelerator...it clearly doesn't blow off between shifts though.

Ace_HollyWood · 11-08-2012, 11:34 AM

I was running the bov with the silicone vac hoses that came with it - however it kept coming off of the manifold. Anyone else experience this problem when running 18psi?

Jeff@TopGearSolutions · 11-08-2012, 11:39 AM

Automatic will not be as loud as a 6 speed. It (auto) holds a lot more boost between shifts.

11-07-2012, 02:32 PM	#1
GI335I 335 32 Rep 306 Posts Drives: 335 Join Date: May 2012 Location: x iTrader: (0)	Installed ercp+synapse bov... expected it to be louder?!?!?!?!?! Well I heard that tial q are the quietest bovs and sqv's are the loudest, and somewhere in between are the synapse bovs. I brought mine after seeing that video on youtube: So I have installed it today and I'm.... dissapointed. It has nothing to see with that video. Seriously I have expected it to be louder. I mean i can barelly hear it even with windows down. I first thought that there was something wrong with the installation so I rechecked on everything and everything is perfectly in place. Is the bov that quiet or am I the only one experiencing this?! And is there anything that i can do to make it louder? I dont have a surge so I didnt feel like tweaking it, or should I? I dont have a boost leak. Btw Im not stock, I'm have a JB+, so god knows if you can hear it @ stock boost... When i first got it: Hearing it after installing it: LOL __________________ Too much mods to list..
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11-07-2012, 02:58 PM	#2
farb teh Rider! 12 Rep 488 Posts Drives: E92 335xi Join Date: May 2011 Location: Toronto iTrader: (1)	I have ER CP and tial bov and it is very noticeable with the windows down if I shift up at any rpm higher than 3K.
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11-07-2012, 03:22 PM	#3
GI335I 335 32 Rep 306 Posts Drives: 335 Join Date: May 2012 Location: x iTrader: (0)	just need people who installed synapse bovs on their cars to chime in.. __________________ Too much mods to list..
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11-07-2012, 03:38 PM	#4
HighPSI Banned 9 Rep 280 Posts Drives: E92 335i Join Date: Nov 2012 Location: Toronto iTrader: (0)	its very obvious that video has enhanced audio
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11-07-2012, 03:45 PM	#5
Jeff@TopGearSolutions 3441 Rep 79,211 Posts Drives: C6 Z06, 09 335i, 10 335xi Join Date: Dec 2008 Location: www.TopGearSolutions.com iTrader: (37)	Jb+ isn't that much boost to blow off. You would notice an increase in noise with running more boost. You may want to look into a JB4 or another tune that runs more boost. PS That video is severely enhanced, I believe the Microphone is in the engine bay. Nobody's car sounds like that in real life driving around.
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11-07-2012, 03:46 PM	#6
Ace_HollyWood Private First Class 7 Rep 122 Posts Drives: 2008 APW e92 335i Join Date: Feb 2012 Location: Cincinnati Ohio iTrader: (1)	I have the ER with synapse - which vac hoses are you using?
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11-07-2012, 03:57 PM	#7
idrift4wd Brigadier General 149 Rep 3,552 Posts Drives: Three Hundred and Thirty Five Join Date: Jul 2010 Location: Yonkers NY iTrader: (0) Garage List 2007 BMW [7.00]	synapse DEF uses a mic closer to the engine. making it sound louder. no way you can hear that much engine noise from the interior with windows closed. they got you! But if you want it louder. take off engine cowl and get a set of intakes. super BOV and turbo sound
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11-07-2012, 04:44 PM	#9
TommyLights Colonel 213 Rep 2,602 Posts Drives: Man Join Date: Jul 2010 iTrader: (12)	I have one. Definitely very loud, but I am running 18psi. __________________ https://t.me/pump_upp
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11-07-2012, 07:03 PM	#13
Hisam135i Major 54 Rep 1,166 Posts Drives: 335i Join Date: Dec 2010 Location: Irvine, CA iTrader: (0)	LOL so badly enhanced in the video haha __________________ 2008 Monaco Blue 335i \| Terracotta \| Premium \| Auto \| Comfort Access \| Matte-black Grills \| Carbon Fiber Splitters \| 20% Tint \| 1- point E9x Picture Game \| Staggered 19' VMR V701 \| Legal Disclaimer: My posts on this website cannot be held against me in any issues, such as warranty claims. \|
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11-07-2012, 07:40 PM	#14
SfValley335i Colonel 164 Rep 2,409 Posts Drives: Current:135i Sold:335i sedan Join Date: Mar 2007 Location: City of Angels iTrader: (8)	I sold my synapse bov because it was too loud. Its crazy loud (like a bus)at 15psi, and around 10psi its pretty loud. I was able to hear it even shifting at 2k rpm... gets annoying after awhile.
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11-07-2012, 09:39 PM	#15
tcw Captain 52 Rep 748 Posts Drives: 2008 335i Join Date: Jan 2012 Location: Atlanta, GA iTrader: (2)	I've been riding with no cowl for about 6 months. Rain and shine, stills runs fine. __________________ 2008 335I E92, AW, VFF700, 18" Forgestar F14, M3 front/side, M-tech rear, AMS IC, H&R Touring Cup Kit suspension, HID AE, ER Charge Pipe & Synapse BOV, CIC Retrofit, Quafie, DSS, Defiv Lockdown, SPEC 2+/Steel SMFW, Walbro 450
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11-07-2012, 10:45 PM	#16
rush jamaica Captain 74 Rep 809 Posts Drives: 2006 330i bmw Join Date: Feb 2010 Location: ga iTrader: (0) Garage List 2006 E90 [0.00]	U need to the active bov and charge pipe sounds good
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11-08-2012, 09:30 AM	#18
stratos_335 First Lieutenant 36 Rep 332 Posts Drives: BMW 335i Join Date: Sep 2009 Location: Greece iTrader: (0)	Install the diverter flange without the diverter hose. It will make it sound louder. I'm not home now to post a pic... Without the diverter flange the synapse BOV doesn't sound much __________________
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11-08-2012, 11:34 AM	#20
Ace_HollyWood Private First Class 7 Rep 122 Posts Drives: 2008 APW e92 335i Join Date: Feb 2012 Location: Cincinnati Ohio iTrader: (1)	I was running the bov with the silicone vac hoses that came with it - however it kept coming off of the manifold. Anyone else experience this problem when running 18psi?
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11-08-2012, 11:39 AM	#21
Jeff@TopGearSolutions 3441 Rep 79,211 Posts Drives: C6 Z06, 09 335i, 10 335xi Join Date: Dec 2008 Location: www.TopGearSolutions.com iTrader: (37)	Automatic will not be as loud as a 6 speed. It (auto) holds a lot more boost between shifts.
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