Siren Sound

onesuperboi · 03-14-2011, 10:01 PM

I'm thankful I found this thread.

Just last week I've been hearing that siren sound. I first noticed it when I started up the car, and as the revs went down, the siren sound was present. Its' been happening all the time especially under partial throttle in the low gears. And, it does not disappear when the car is warmed up. It's sooo annoying! I scheduled a service appointment so I'll see what the dealership says.

StanDizle4Shizl · 05-31-2012, 05:01 PM

Quote:

Originally Posted by onesuperboi

I'm thankful I found this thread.

Just last week I've been hearing that siren sound. I first noticed it when I started up the car, and as the revs went down, the siren sound was present. Its' been happening all the time especially under partial throttle in the low gears. And, it does not disappear when the car is warmed up. It's sooo annoying! I scheduled a service appointment so I'll see what the dealership says.

What did the dealer end up saying it was?

themyst · 05-31-2012, 05:05 PM

Even my RBs with like 1200 miles on them have Siren on cold start. Both N54s make the noise. IMO, normal and not worth worrying over.

E90Company · 05-31-2012, 05:31 PM

If my car is bone stock, am I supposed to hear the turbos with everything off windows down? Or is it an issue?

StanDizle4Shizl · 05-31-2012, 06:44 PM

Quote:

Originally Posted by themyst

Even my RBs with like 1200 miles on them have Siren on cold start. Both N54s make the noise. IMO, normal and not worth worrying over.

It is a worry because I have a lost in power and when I drive the vehicle it'll make the sound when I'm up near 2k or 3k rpm. I also have a JB4 tune but on Map 0 currently... something from the tune messed it up?

3-Serious · 05-31-2012, 09:00 PM

When my turbos went I didn't hear a sound. Got no warning whines nothing. One day my check engine light came on and I couldn't boost pass 8psi and the exhaust note was louder. My newer turbos which have about 8k on them have been whining for the past 6k out of the 8k. They hold boost fine and the cars pulls beautifully with my new tune.

Jeff@TopGearSolutions · 05-31-2012, 09:27 PM

Turbo's make noises, if you are losing power or losing oil then it would be a concern IMO.

StanDizle4Shizl · 05-31-2012, 10:30 PM

I'm guessing my turbo(s) is/are going out because I have a lost of power and ever since I put JB4 in and map 5 it started making that siren sound. I think I'm going to just purchase oem ones and try to put them in and hope I have power again.

View Poll Results: Are you Expierencing Siren noise
Yes but only when oil temps are low	60	35.09%
Yes all the time but not as loud when the oil is at operating temp.	50	29.24%
not at all	61	35.67%
Voters: 171. You may not vote on this poll

03-14-2011, 10:01 PM	#67
onesuperboi Major 53 Rep 1,357 Posts Drives: '08 e92 335i COBB 4.01 Stage 1 Join Date: Aug 2008 Location: Bay Area, CA (Alameda) iTrader: (6)	I'm thankful I found this thread. Just last week I've been hearing that siren sound. I first noticed it when I started up the car, and as the revs went down, the siren sound was present. Its' been happening all the time especially under partial throttle in the low gears. And, it does not disappear when the car is warmed up. It's sooo annoying! I scheduled a service appointment so I'll see what the dealership says.
	Appreciate 0 Quote

05-31-2012, 05:05 PM	#69
themyst Major General 189 Rep 6,631 Posts Drives: '16 MK7 GTI Join Date: Feb 2009 Location: NYC iTrader: (8)	Even my RBs with like 1200 miles on them have Siren on cold start. Both N54s make the noise. IMO, normal and not worth worrying over. __________________ E90 LCI N54 6AT
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05-31-2012, 05:31 PM	#70
E90Company Major General 198 Rep 6,136 Posts Drives: Car Join Date: Mar 2012 Location: FL iTrader: (2)	If my car is bone stock, am I supposed to hear the turbos with everything off windows down? Or is it an issue?
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05-31-2012, 09:00 PM	#72
3-Serious Lieutenant 48 Rep 496 Posts Drives: F32 B58 6spd Join Date: Dec 2008 Location: Florida iTrader: (1)	When my turbos went I didn't hear a sound. Got no warning whines nothing. One day my check engine light came on and I couldn't boost pass 8psi and the exhaust note was louder. My newer turbos which have about 8k on them have been whining for the past 6k out of the 8k. They hold boost fine and the cars pulls beautifully with my new tune. __________________ B58 6spd - Stage 2 incoming
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05-31-2012, 09:27 PM	#73
Jeff@TopGearSolutions 3472 Rep 79,211 Posts Drives: C6 Z06, 09 335i, 10 335xi Join Date: Dec 2008 Location: www.TopGearSolutions.com iTrader: (37)	Turbo's make noises, if you are losing power or losing oil then it would be a concern IMO.
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05-31-2012, 10:30 PM	#74
StanDizle4Shizl Private 10 Rep 88 Posts Drives: e92 AW 6MT Join Date: Apr 2012 Location: STL/IL iTrader: (1)	I'm guessing my turbo(s) is/are going out because I have a lost of power and ever since I put JB4 in and map 5 it started making that siren sound. I think I'm going to just purchase oem ones and try to put them in and hope I have power again. __________________ 2007 Alpine White E92 6MT / Sports Package / Black Interior / Brushed Aluminum Trim / OEM Aero Lip / Injen Intakes
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