Does Cold Weather Make The Turbos Quieter (w/ DCI)

3Aims · 12-08-2009, 02:00 PM

The temp has dropped here in Dallas and I can't really hear the whoosh anymore now that the weather is less than 50 degrees. On really cold mornings, less than 40 degrees, the whoosh is almost totally gone. Am I the only one to notice this?

MTV · 12-08-2009, 03:13 PM

My VR-T is even louder in the cold

gian335 · 12-08-2009, 03:58 PM

Should seem a little louder in colder temps..... I know for a fact that in really cold weather my dci and my exhaust tend 2 get much louder

3Aims · 12-08-2009, 04:04 PM

Quote:

Originally Posted by gian335

Should seem a little louder in colder temps..... I know for a fact that in really cold weather my dci and my exhaust tend 2 get much louder

Maybe it's just me. I have a 535i, vs a 335i, and the thick black insulation mat on the inside of my hood really quiets my DCIS/Engine down by a fair bit. I probably need to check the connections again to make sure I don't have an air leak somewhere.

deletedelete · 12-08-2009, 04:06 PM

Actually mine sounds louder now that its winter.

kyleb350 · 12-08-2009, 04:09 PM

I'd think that now it's colder, the air is denser, and the turbos don't have to work as hard to reach the target airflow

JayKay335i · 12-08-2009, 04:16 PM

Maybe it has something to do with the fluids and turbos being so cold that they dont spin as freely as in the summer when you start it off in hot weather. Once the car is warm though, they should be louder.

raceyBMW · 12-08-2009, 05:19 PM

Quote:

Originally Posted by kyleb350

I'd think that now it's colder, the air is denser, and the turbos don't have to work as hard to reach the target airflow

+1, this would be my guess.

RBC · 12-08-2009, 05:27 PM

This is happening to me also... No whoosh should mean there is some leak in the DCI connection?

NiVeDh · 12-08-2009, 05:30 PM

Quote:

Originally Posted by kyleb350

I'd think that now it's colder, the air is denser, and the turbos don't have to work as hard to reach the target airflow

Probably this.

BadBoostedBMWM3 · 12-08-2009, 07:41 PM

I wouldn't think so...

3Aims · 12-10-2009, 10:06 AM

Quote:

Originally Posted by RBC

This is happening to me also... No whoosh should mean there is some leak in the DCI connection?

I checked everything around the DCI and it looks as tight as the day I installed it. I just think the colder air reduces the sound of the turbos. I still hear air moving to the DCI but the turbo spin sound is 25% of what is was when the the temps were above 50/60 degrees. This am it is 27 degrees and there was zero turbo spool sound.

nebz · 12-10-2009, 01:43 PM

i have a UR CAI and it sounds very nice! hear the turbo spool alot.

Mike@N54Tuning.com · 12-10-2009, 08:55 PM

I notice my exhaust is louder when its really cold out..

Mike

hotrod182 · 12-10-2009, 10:33 PM

Turbos should whine louder when cold. I don't know about the whooshing sound.

wonsungnabi · 12-10-2009, 10:35 PM

cold oil = whine louder

12-08-2009, 02:00 PM	#1
3Aims Private First Class 2 Rep 100 Posts Drives: 535i Join Date: Aug 2009 Location: Dallas iTrader: (1)	Does Cold Weather Make The Turbos Quieter (w/ DCI) The temp has dropped here in Dallas and I can't really hear the whoosh anymore now that the weather is less than 50 degrees. On really cold mornings, less than 40 degrees, the whoosh is almost totally gone. Am I the only one to notice this?
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12-08-2009, 03:13 PM	#2
MTV Banned 241 Rep 1,906 Posts Drives: E60 M5, Volvo S60R Join Date: May 2007 Location: Montreal iTrader: (1)	My VR-T is even louder in the cold
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12-08-2009, 03:58 PM	#3
gian335 Major 36 Rep 1,031 Posts Drives: e92 335 Join Date: Apr 2008 Location: uknown iTrader: (1)	Should seem a little louder in colder temps..... I know for a fact that in really cold weather my dci and my exhaust tend 2 get much louder
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12-08-2009, 04:06 PM	#5
deletedelete Major General 361 Rep 5,873 Posts Drives: m Join Date: Nov 2008 Location: usa iTrader: (14) Garage List 2013 e92 M3 [0.00] 2011 e93 M3 (sold) [0.00] 2009 335xi (sold) [0.00]	Actually mine sounds louder now that its winter. __________________ ---> Click For xi/xDrive Suspension Compatibility List <---
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12-08-2009, 04:09 PM	#6
kyleb350 Brigadier General 424 Rep 4,709 Posts Drives: '21 X3MC Join Date: Jun 2008 Location: Milwaukee iTrader: (6)	I'd think that now it's colder, the air is denser, and the turbos don't have to work as hard to reach the target airflow
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12-08-2009, 04:16 PM	#7
JayKay335i Banned 189 Rep 5,046 Posts Drives: ///M323 DCT Join Date: Apr 2009 Location: North Dakota; its best DUHHHHHH iTrader: (1)	Maybe it has something to do with the fluids and turbos being so cold that they dont spin as freely as in the summer when you start it off in hot weather. Once the car is warm though, they should be louder.
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12-08-2009, 05:27 PM	#9
RBC Private 7 Rep 98 Posts Drives: BMW 335i E92 '07 6MT Join Date: Nov 2009 Location: PT iTrader: (1)	This is happening to me also... No whoosh should mean there is some leak in the DCI connection?
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12-08-2009, 07:41 PM	#11
BadBoostedBMWM3 Lieutenant 334 Rep 557 Posts Drives: e36m,F80,G80;TRX; 992 TTS; F95 Join Date: Nov 2009 Location: Louisville, KY iTrader: (0)	I wouldn't think so...
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12-10-2009, 01:43 PM	#13
nebz Captain 21 Rep 684 Posts Drives: M3 Join Date: Oct 2007 Location: nyc iTrader: (6)	i have a UR CAI and it sounds very nice! hear the turbo spool alot.
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12-10-2009, 08:55 PM	#14
Mike@N54Tuning.com Joint Chiefs of Staff 4916 Rep 115,980 Posts Drives: 2007 335i, 2015 M3 Join Date: Dec 2008 Location: N54tuning.com iTrader: (89)	I notice my exhaust is louder when its really cold out.. Mike
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12-10-2009, 10:33 PM	#15
hotrod182 . 810 Rep 3,974 Posts Drives: 2023 i4 M50 Join Date: Dec 2006 Location: California iTrader: (0)	Turbos should whine louder when cold. I don't know about the whooshing sound. __________________ 2011 Alpine 335d M-Sport 12.34 @ 110.48mph 2019 i3s Terra, 2008 Black 335i Sedan. 11.11@ 129.47 mph 2008 Monaco Blue JB3 2.0 335i Coupe. 11.33 @ 132.77 mph, 60-130mph: 6.95 seconds 2023 i4 M50 11.48 @ 121.56mph, 3.43 0-60 (dragy)
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12-10-2009, 10:35 PM	#16
wonsungnabi First Lieutenant 20 Rep 355 Posts Drives: E92 335 Join Date: Dec 2007 Location: Boston MA iTrader: (7)	cold oil = whine louder
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