LHS exhaust not working when cold?

RichM50d · 11-13-2018, 01:59 PM

I noticed today that from a cold start, only the right side exhaust has any steam coming out, and that the left side has nothing. Is that normal?

verysideways · 11-13-2018, 02:17 PM

Quote:

Originally Posted by RichM50d

I noticed today that from a cold start, only the right side exhaust has any steam coming out, and that the left side has nothing. Is that normal?

I'm assuming that's the valve for sport vs comfort.

nyalpine90 · 11-13-2018, 02:20 PM

Yes its normal across all models

ParadigmDawg · 11-13-2018, 02:23 PM

It's designed that way to get cat up to temperature quickly.

AndroidRobot · 11-13-2018, 04:54 PM

Quote:

Originally Posted by ParadigmDawg

It's designed that way to get cat up to temperature quickly.

I came here to say this. At least one person here knows the real answer!

RichM50d · 11-14-2018, 01:34 AM

Thanks guys

BobsM3Coupe · 11-14-2018, 07:09 PM

Quote:

Originally Posted by ParadigmDawg

It's designed that way to get cat up to temperature quickly.

It's been this way for quite a few years now. Just that most people never notice it.

RichM50d · 11-15-2018, 01:52 AM

Quote:

Originally Posted by BobsM3Coupe

It's been this way for quite a few years now. Just that most people never notice it.

Exactly. I’m normally inside the car when I’m driving! But someone mentioned it the other day, hence the question. I figured it would be something like that.

kevinkay · 11-15-2018, 10:48 AM

THANKS for asking and THANKS for answering
I semi noticed it and just thought it was which way the wind was blowing...

11-13-2018, 01:59 PM	#1
RichM50d Lieutenant 332 Rep 528 Posts Drives: ‘22 8 Series Gran Coupe Join Date: Jan 2018 Location: UK iTrader: (0)	LHS exhaust not working when cold? I noticed today that from a cold start, only the right side exhaust has any steam coming out, and that the left side has nothing. Is that normal?
	Appreciate 1 kevinkay271.50 Tweet Quote

11-13-2018, 02:20 PM	#3
nyalpine90 Lieutenant General 7421 Rep 11,835 Posts Drives: MY24 G01 AW Msport Join Date: Feb 2008 Location: L.I. NY iTrader: (4) Garage List 2016 BMW X4 [9.33]	Yes its normal across all models
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11-13-2018, 02:23 PM	#4
ParadigmDawg Captain 610 Rep 893 Posts Drives: 2019 AMG GLC63s Join Date: Mar 2018 Location: Fort Worth, Texas iTrader: (0)	It's designed that way to get cat up to temperature quickly.
	Appreciate 1 kevinkay271.50 Quote

11-14-2018, 01:34 AM	#6
RichM50d Lieutenant 332 Rep 528 Posts Drives: ‘22 8 Series Gran Coupe Join Date: Jan 2018 Location: UK iTrader: (0)	Thanks guys
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11-15-2018, 10:48 AM	#9
kevinkay Lieutenant 272 Rep 496 Posts Drives: X3 Join Date: Oct 2018 Location: Boston, MA USA iTrader: (0)	THANKS for asking and THANKS for answering I semi noticed it and just thought it was which way the wind was blowing...
	Appreciate 0 Quote

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