Exhaust bark on the up-shifts

filip75 · 09-06-2014, 10:37 PM

Has anyone noticed that during aggressive driving, you can hear exhaust barking. I can explain why the pop can happen on the downshift, but on the upshift... Can it be that if done fast with manual transmission, while the clutch is still partially engaged, I give it too much gas, therefore suddenly increasing the RPMs?

parky1215 · 09-06-2014, 10:52 PM

Yea it barks and farts during full throttle shift.
It's not exactly good sounding bark either.
I didn't notice much of these during break in period for obvious reason.
But now that I am running the car little bit harder, I am noticing more "bad" sound coming from it.
The more I hear stock exhaust, the more I get disappointed with it.

Most disappointing part of this exhaust is flapper that rattles like cheap honda exhaust.

I am glad that my new aftermaket is coming in few weeks.
Can't wait to get rid of this exhaust.

filip75 · 09-06-2014, 10:59 PM

I actually like the way it barks. It is a first car for me that does it.

tooch · 09-07-2014, 01:37 AM

I like the bark also it's unique.

JL M3 · 09-07-2014, 01:53 AM

Love the bark as well

Bimmer4John · 09-07-2014, 04:36 AM

With my Audi, I was told that the noise was due to the fact that they retard the timing during upshifts to help pull the revs down quicker. This helps with faster shifts.

dmk08 · 09-07-2014, 06:41 AM

Quote:

Originally Posted by parky1215

Yea it barks and farts during full throttle shift.
It's not exactly good sounding bark either.
I didn't notice much of these during break in period for obvious reason.
But now that I am running the car little bit harder, I am noticing more "bad" sound coming from it.
The more I hear stock exhaust, the more I get disappointed with it.

Most disappointing part of this exhaust is flapper that rattles like cheap honda exhaust.

I am glad that my new aftermaket is coming in few weeks.
Can't wait to get rid of this exhaust.

I thunk you can get a new exhaust from the dealer. Backordered probably.

Boss330 · 09-07-2014, 06:49 AM

Quote:

Originally Posted by Bimmer4John

With my Audi, I was told that the noise was due to the fact that they retard the timing during upshifts to help pull the revs down quicker. This helps with faster shifts.

Ignition timing mapping is the key here

Wes Howell · 09-07-2014, 08:54 AM

Love the bark

dhoggm3 · 09-07-2014, 04:41 PM

The bark on the new Cayman/Boxster S is a lot more pronounced - even to the point of being a little humorous. The F8X bark is subtle and kinda nice.

MaynardZed · 09-07-2014, 10:17 PM

I LOVE the barks, pops, and burbles during upshifts and aggressive driving. I don't think changing to aftermarket exhaust will eliminate these, probably make them more noticeable actually.

I could do without the flapper rattle though and that should go away when replacing exhaust.

filip75 · 09-07-2014, 10:59 PM

Is barking 6MT specific, or is it as pronounced with DCT?

TheRealOrosie · 09-08-2014, 01:14 PM

Quote:

Originally Posted by filip75

Is barking 6MT specific, or is it as pronounced with DCT?

6MT and DCT, as owners with both are chiming in here.

JoeFromPA · 09-08-2014, 02:07 PM

Still in break-in, which means I'm doing WOT to a small degree so rings seat nicely but keeping away from redline and full on WOT to keep temps and friction down while the filthy oil is in there.

Loving the barks and can't wait to experience them more. They are most apparent when WOT shifting in sport plus mode.

KubaM4 · 09-08-2014, 04:48 PM

6speed here m4 yes it barks sounds good to me ... did it in a tunnel today ppl in 3 series pulled up to me with thumbs up....

purdyawesome · 09-18-2014, 09:02 PM

I LOVE the angry bark. It sounds menacing and badass.

WERKE · 09-18-2014, 09:48 PM

Love the barks; so much thumbs up from other drivers near me; it's cool from a turbo car!

09-06-2014, 10:37 PM	#1
filip75 Facetious 109 Rep 530 Posts Drives: '15 AW M4 Join Date: Nov 2013 Location: San Antonio, TX iTrader: (0)	Exhaust bark on the up-shifts Has anyone noticed that during aggressive driving, you can hear exhaust barking. I can explain why the pop can happen on the downshift, but on the upshift... Can it be that if done fast with manual transmission, while the clutch is still partially engaged, I give it too much gas, therefore suddenly increasing the RPMs? __________________ Current: '15 BMW M4 (6MT), '08 HD Dyna Street Bob Previous: '06 BMW 330Ci; '06 Mercedes CLK-350; '04 Acura TL A-Spec; '95 BMW 318ti; '92 Mercury Cougar; '94 Honda Accord
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09-06-2014, 10:52 PM	#2
parky1215 Lieutenant Colonel 561 Rep 1,979 Posts Drives: F90 M5C \| G06 X6 M60i Join Date: Nov 2010 Location: Rancho Cucamonga, CA iTrader: (13)	Yea it barks and farts during full throttle shift. It's not exactly good sounding bark either. I didn't notice much of these during break in period for obvious reason. But now that I am running the car little bit harder, I am noticing more "bad" sound coming from it. The more I hear stock exhaust, the more I get disappointed with it. Most disappointing part of this exhaust is flapper that rattles like cheap honda exhaust. I am glad that my new aftermaket is coming in few weeks. Can't wait to get rid of this exhaust.
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09-06-2014, 10:59 PM	#3
filip75 Facetious 109 Rep 530 Posts Drives: '15 AW M4 Join Date: Nov 2013 Location: San Antonio, TX iTrader: (0)	I actually like the way it barks. It is a first car for me that does it. __________________ Current: '15 BMW M4 (6MT), '08 HD Dyna Street Bob Previous: '06 BMW 330Ci; '06 Mercedes CLK-350; '04 Acura TL A-Spec; '95 BMW 318ti; '92 Mercury Cougar; '94 Honda Accord
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09-07-2014, 01:37 AM	#4
tooch Captain 112 Rep 806 Posts Drives: F82 Join Date: Jul 2007 Location: NOR-CAL iTrader: (0)	I like the bark also it's unique. __________________ 96 E31 JB 07 E92 AW F82 BSM
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09-07-2014, 01:53 AM	#5
JL M3 First Lieutenant 36 Rep 348 Posts Drives: E46 M3 Join Date: Oct 2009 Location: Southern California iTrader: (3)	Love the bark as well
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09-07-2014, 04:36 AM	#6
Bimmer4John Bimmer Fan 19 Rep 109 Posts Drives: M4 Join Date: Aug 2007 Location: Los Angeles iTrader: (0) Garage List 2015 BMW M4 [0.00] 2010 Audi S4 [6.00] 2007 BMW 335i [0.00]	With my Audi, I was told that the noise was due to the fact that they retard the timing during upshifts to help pull the revs down quicker. This helps with faster shifts.
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09-07-2014, 08:54 AM	#9
Wes Howell www.facebook.com/weshowellcreative 59 Rep 623 Posts Drives: 2015 AW M4 Coupe Project Car Join Date: Feb 2011 Location: Instagram #weshowell iTrader: (1)	Love the bark
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09-07-2014, 04:41 PM	#10
dhoggm3 Major 269 Rep 1,282 Posts Drives: 850i C, Gated R8 5.2, E63 Join Date: Jul 2007 Location: Central PA iTrader: (1)	The bark on the new Cayman/Boxster S is a lot more pronounced - even to the point of being a little humorous. The F8X bark is subtle and kinda nice. __________________ M850i Vert with RaceChip E46 M3, Euro Headers, Rasp Pipe, Kassel Tune Alpina B8, zero performance mods
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09-07-2014, 10:17 PM	#11
MaynardZed Lieutenant Colonel 1231 Rep 1,789 Posts Drives: wife crazy Join Date: Jul 2014 Location: Phoenix iTrader: (0) Garage List 2019 Ford Raptor [0.00] 2016 Porsche 991.1 ... [0.00] 1987 Chevy Camaro I ... [0.00] 1972 Chevy Corvette [0.00] 1999 BMW M3 race car [0.00]	I LOVE the barks, pops, and burbles during upshifts and aggressive driving. I don't think changing to aftermarket exhaust will eliminate these, probably make them more noticeable actually. I could do without the flapper rattle though and that should go away when replacing exhaust. __________________ Road course laptimes for BMW M4 2015 6MT WHP East Track: 1:04.880, Arizona Motorsports Park: 1:54.352 Road course laptimes for Porsche 911 991.1 GTS 7MT WHP East Track: 1:02.770, Arizona Motorsports Park: 1:48.889
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09-07-2014, 10:59 PM	#12
filip75 Facetious 109 Rep 530 Posts Drives: '15 AW M4 Join Date: Nov 2013 Location: San Antonio, TX iTrader: (0)	Is barking 6MT specific, or is it as pronounced with DCT? __________________ Current: '15 BMW M4 (6MT), '08 HD Dyna Street Bob Previous: '06 BMW 330Ci; '06 Mercedes CLK-350; '04 Acura TL A-Spec; '95 BMW 318ti; '92 Mercury Cougar; '94 Honda Accord
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09-08-2014, 02:07 PM	#14
JoeFromPA Colonel 1795 Rep 2,997 Posts Drives: '15 AW M3 6MT Stripper Join Date: Aug 2013 Location: SE PA iTrader: (0)	Still in break-in, which means I'm doing WOT to a small degree so rings seat nicely but keeping away from redline and full on WOT to keep temps and friction down while the filthy oil is in there. Loving the barks and can't wait to experience them more. They are most apparent when WOT shifting in sport plus mode.
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09-08-2014, 04:48 PM	#15
KubaM4 Private 5 Rep 60 Posts Drives: 2015 M4 Join Date: Sep 2014 Location: central nj iTrader: (0)	6speed here m4 yes it barks sounds good to me ... did it in a tunnel today ppl in 3 series pulled up to me with thumbs up....
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09-18-2014, 09:02 PM	#16
purdyawesome Private First Class 26 Rep 184 Posts Drives: 2015 F80 M3, 2014 F15 X5 Join Date: May 2014 Location: Chicago iTrader: (0)	I LOVE the angry bark. It sounds menacing and badass.
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09-18-2014, 09:48 PM	#17
WERKE President Directeur General 73 Rep 247 Posts Drives: F82 M4/ E92 M3 ESS/F-type R Join Date: Mar 2007 Location: Somewhere over the rainbow iTrader: (1)	Love the barks; so much thumbs up from other drivers near me; it's cool from a turbo car! __________________
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