POLL: How many of you have the turbo siren sound from your stock turbos? - BMW 3-Series (E90 E92) Forum

E90Company · 11-13-2012, 05:18 PM

I am just trying to see how many of your cars are exibiting the turbo siren noise many of you are familiar with. Please vote accordingly. Thanks!

In your comment please note if you are stock, or if tuned what tune you are running.

Here are two videos by Hotrod182 that demonstrate the sound:

E90Company · 11-13-2012, 05:20 PM

My car sounds like the above video, but is quieter. It is still present when warm, but even quieter than when cold. Enough to notice.

KaiserN54 · 11-13-2012, 05:46 PM

I do, all the time!!!

of course everyone already knows that.....

nikitino25 · 11-13-2012, 06:10 PM

I have heard the siren literally once since I bought my car about 2,000 miles ago. It happened on the day I bought it and was driving home across the country. At the time I was like awwmaaan but it only lasted for about 1 minute and I haven't heard it since....
I think previous owner had JB4 for a while and I now have cobb, dp's and fmic. Was on the highway going about 75-80 mph at the time (totally stock then).

benzy89 · 11-13-2012, 06:11 PM

This sound is not tune related

335xi Kevo · 11-13-2012, 06:13 PM

pretty sure this is DV related. Most DV's when they are going bad sound like a siren.

ign335i · 11-13-2012, 06:35 PM

This is the turbos having been abused. Likely bearing failure?

slostjoe · 11-13-2012, 06:45 PM

Mine only started doing this one I installed my catless downpipes. I have heard this on many other N54's stock and modified. Whats the big deal?

E90Company · 11-13-2012, 09:09 PM

Quote:

Originally Posted by slostjoe

Mine only started doing this one I installed my catless downpipes. I have heard this on many other N54's stock and modified. Whats the big deal?

That's my question. So many people say different things about the noise, I don't know if it's something to worry about or not.

jdbretz · 11-13-2012, 09:25 PM

I believe the cause to be the turbo bearings going out. To the best of my knowledge (which is somewhat limited on this topic) when they go out the shaft then has a little play in it which as it spins causes the noise. I may be incorrect but that is how I understand it. I just recently got the siren noise after running the guts out of my turbos at an airfield event. They still make and hold boost, but they have the siren sound now.

spool twice · 11-13-2012, 09:28 PM

I do when I quickly let off the gas during high boost(17.5+ psi), but that's about it.

E90Company · 11-13-2012, 09:55 PM

Quote:

Originally Posted by jdbretz

I believe the cause to be the turbo bearings going out. To the best of my knowledge (which is somewhat limited on this topic) when they go out the shaft then has a little play in it which as it spins causes the noise. I may be incorrect but that is how I understand it. I just recently got the siren noise after running the guts out of my turbos at an airfield event. They still make and hold boost, but they have the siren sound now.

This makes sense.

AK 335i · 11-13-2012, 09:57 PM

Quote:

Originally Posted by E90Company

This makes sense.

Quit fronting LOL i want to hear your car in person when i get home

Maybe mine does this, maybe im deaf? lol

E90Company · 11-13-2012, 10:44 PM

Quote:

Originally Posted by smi1gj

Quit fronting LOL i want to hear your car in person when i get home

Maybe mine does this, maybe im deaf? lol

I'll show you

Wedge1967 · 11-13-2012, 10:53 PM

I have to say it's fun to poll people when they have no clue as to what this sound sounds like. With DCI and DPs, I can here my turbo's spool, but it's not the howling noise you get when a turbo fails. I really wonder how many people actually know what that sounds like?

Quote:

Originally Posted by E90Company

I am just trying to see how many of your cars are exibiting the turbo siren noise many of you are familiar with. Please vote accordingly. Thanks!

In your comment please note if you are stock, or if tuned what tune you are running.

E90Company · 11-13-2012, 10:56 PM

Quote:

Originally Posted by Wedge1967

I have to say it's fun to poll people when they have no clue as to what this sound sounds like. With DCI and DPs, I can here my turbo's spool, but it's not the howling noise you get when a turbo fails. I really wonder how many people actually know what that sounds like?

Lol, good point. Edited OP

KaiserN54 · 11-13-2012, 11:15 PM

Quote:

Originally Posted by jdbretz

I believe the cause to be the turbo bearings going out. To the best of my knowledge (which is somewhat limited on this topic) when they go out the shaft then has a little play in it which as it spins causes the noise. I may be incorrect but that is how I understand it. I just recently got the siren noise after running the guts out of my turbos at an airfield event. They still make and hold boost, but they have the siren sound now.

Like this?

BTW if someone can tell me how to embed my videos i would really appreciate it. [u2b] doesn't seem to work for me

Manny_World · 11-14-2012, 12:15 AM

I wish I had that sound instead of one I have. Mine sounds like a malfunctioned ticking time bomb (bad waste gate rattle). No siren and spooling sounds.

E90Company · 11-14-2012, 10:18 AM

Seems as if the majority so far has the sound. Those of you that have noticed it, has it gotten louder over time?

jdbretz · 11-14-2012, 01:53 PM

Quote:

Originally Posted by atomos319

Like this?

BTW if someone can tell me how to embed my videos i would really appreciate it. [u2b] doesn't seem to work for me

To embed the video, you take just the last part of your video's link (i.e. KdqBOyEZ90g) from the video you posted above and put just that part between the [u2b] brackets. That will embed the video.

The odd noise coming from your turbos could very well be from bad bearings or some sort of damage to the turbine itself. It seems like yours noise is to a much worse degree than most experience. I am not an expert by any means on this matter though so these are just my best guess. I am sure Rob Beck or Tony@Vargas Turbos could elaborate more.

raceyBMW · 11-14-2012, 03:10 PM

I only really started to notice mine after the catless DP install. Pretty loud first thing in the morning, but starts to go away after it warms up.

Before the DPs it would only be the faintest sound early in the AM when cold.

E90Company · 11-14-2012, 03:42 PM

Quote:

Originally Posted by jdbretz

To embed the video, you take just the last part of your video's link (i.e. KdqBOyEZ90g) from the video you posted above and put just that part between the [u2b] brackets. That will embed the video.

The odd noise coming from your turbos could very well be from bad bearings or some sort of damage to the turbine itself. It seems like yours noise is to a much worse degree than most experience. I am not an expert by any means on this matter though so these are just my best guess. I am sure Rob Beck or Tony@Vargas Turbos could elaborate more.

Let's hope. I'm very curious

View Poll Results: Turbo siren?
Yes, only when cold	31	15.20%
Yes when cold, yes when warm but quieter	51	25.00%
Yes, all the time	31	15.20%
Never	91	44.61%
Voters: 204. You may not vote on this poll

11-13-2012, 05:18 PM	#1
E90Company Major General Drives: 335i Join Date: Mar 2012 Location: SFL Posts: 5,680 iTrader: (2)	POLL: How many of you have the turbo siren sound from your stock turbos? I am just trying to see how many of your cars are exibiting the turbo siren noise many of you are familiar with. Please vote accordingly. Thanks! In your comment please note if you are stock, or if tuned what tune you are running. Here are two videos by Hotrod182 that demonstrate the sound: Last edited by E90Company; 11-13-2012 at 10:56 PM.
	Tweet

11-13-2012, 05:20 PM	#2
E90Company Major General Drives: 335i Join Date: Mar 2012 Location: SFL Posts: 5,680 iTrader: (2)	My car sounds like the above video, but is quieter. It is still present when warm, but even quieter than when cold. Enough to notice. Last edited by E90Company; 11-13-2012 at 10:57 PM.

11-13-2012, 06:10 PM	#4
nikitino25 Private First Class Drives: '07 E92 335i Join Date: Dec 2011 Location: Missouri Posts: 197 iTrader: (1)	I have heard the siren literally once since I bought my car about 2,000 miles ago. It happened on the day I bought it and was driving home across the country. At the time I was like awwmaaan but it only lasted for about 1 minute and I haven't heard it since.... I think previous owner had JB4 for a while and I now have cobb, dp's and fmic. Was on the highway going about 75-80 mph at the time (totally stock then). Last edited by nikitino25; 11-13-2012 at 06:40 PM.

11-13-2012, 06:13 PM	#6
335xi Kevo First Lieutenant Drives: 2008 335xi Join Date: Jan 2012 Location: CT Posts: 391 iTrader: (2)	pretty sure this is DV related. Most DV's when they are going bad sound like a siren. __________________ 08' 335xi 6MT Space Metallic Grey Premium, Nav, Cold weather, Sport Procede//PWM Meth//VRSF XI Downpipe//Forge DV//DCI//KW V1//SCOOPS//ETS FMIC//ECS GEOMET ROTORS//HAWK//CDV//PERFORMANCE SPOILER//CSL//

11-13-2012, 05:46 PM	#3
KaiserN54 Second Lieutenant Drives: 2007 335I Join Date: Mar 2012 Location: Turbotown Posts: 233 iTrader: (0)	I do, all the time!!! of course everyone already knows that.....

11-13-2012, 06:11 PM	#5
benzy89 Banned Drives: '08 E90 335i Join Date: Jan 2012 Location: Northern NJ Posts: 2,400 iTrader: (3) Garage List 2008 BMW 335i [3.75]	This sound is not tune related

11-13-2012, 06:35 PM	#7
ign335i Second Lieutenant Drives: 335i e92 Join Date: Nov 2012 Location: CA Posts: 251 iTrader: (1)	This is the turbos having been abused. Likely bearing failure?

11-13-2012, 06:45 PM	#8
slostjoe NEWBICON Drives: E92 335i Join Date: Jul 2012 Location: Springfield, MO Posts: 282 iTrader: (6)	Mine only started doing this one I installed my catless downpipes. I have heard this on many other N54's stock and modified. Whats the big deal? __________________ E92 6MT 335i www.cmsmotorsports.com

11-13-2012, 09:25 PM	#10
jdbretz Captain Drives: '07 E92 335i, '07 E70 X5 4.8i Join Date: Dec 2010 Location: Florida Posts: 693 iTrader: (8)	I believe the cause to be the turbo bearings going out. To the best of my knowledge (which is somewhat limited on this topic) when they go out the shaft then has a little play in it which as it spins causes the noise. I may be incorrect but that is how I understand it. I just recently got the siren noise after running the guts out of my turbos at an airfield event. They still make and hold boost, but they have the siren sound now.

11-13-2012, 09:28 PM	#11
spool twice Rainbow Racer Drives: e92 N54 335i 6spd Join Date: Sep 2010 Location: Sarasota, FL Posts: 891 iTrader: (6)	I do when I quickly let off the gas during high boost(17.5+ psi), but that's about it. __________________ Loe P. E90 LCI M3 7-DCT Interlagos Blue/Novillo Silver sold E92 335i 6MT Space Gray/Cinnamon interior JB4-E50, DCI, Meth 12.6@115mph sold E46 M3 6MT Black / Black

11-14-2012, 12:15 AM	#18
Manny_World Lieutenant Colonel Drives: e92 335i, e34 525i & e60 530i Join Date: Aug 2011 Location: North Las Vegas Posts: 1,797 iTrader: (10) Garage List 2007 BMW 335i [4.00] 2007 BMW 530i [4.33] 1994 BMW 525i [0.00]	I wish I had that sound instead of one I have. Mine sounds like a malfunctioned ticking time bomb (bad waste gate rattle). No siren and spooling sounds. __________________ Cobb\|Macht Schnell DP & Stud Conversion Kit\|ER FMIC & CP\|aFe DCI\|HKS SSQV 4 BOV\|Muffler Delete\| Bilstein PSS9 coilovers\|StopTech Power Slotted Rotors\| StopTech Ceramic Pads\| StopTech SS Lines\|BMW Perfor. SSK\|HRE 840\|OSS Designs\|CF Vented Hood\|M3 Spoiler\|Cusco Strut Bar\| MagnaFlow 4in Tips\|ACS Pedals\|All weather Mats \|Muteki Bolts\| M3 Hood Struts\|BMW All Weather Mats

11-14-2012, 10:18 AM	#19
E90Company Major General Drives: 335i Join Date: Mar 2012 Location: SFL Posts: 5,680 iTrader: (2)	Seems as if the majority so far has the sound. Those of you that have noticed it, has it gotten louder over time?

11-14-2012, 03:10 PM	#21
raceyBMW king of the hills Drives: 335i coupe Join Date: Dec 2006 Location: Denver, CO Posts: 2,480 iTrader: (1) Garage List 1994 530i [4.25] 2007 335i Coupe [4.07]	I only really started to notice mine after the catless DP install. Pretty loud first thing in the morning, but starts to go away after it warms up. Before the DPs it would only be the faintest sound early in the AM when cold.

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search