BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read
M2 Technical Topics > N55 Engine / Drivetrain / Exhaust / Bolt-ons / Tuning > M2 startup Sound

Post Reply
 
Thread Tools Search this Thread
      12-02-2016, 08:04 AM   #1
Zigarum
Private
66
Rep
76
Posts

Drives: Z$ SDrive 2.3
Join Date: Mar 2012
Location: Switzerland

iTrader: (0)

M2 startup Sound

So I've had my gorgeous black M2 since September and still loving it. I did scratch a wheel and cried a little, but I'm getting fixed and almost over it :-)

Quick question. When I start up the M2 it sounds awesome, it's so loud. After 6 seconds or so the sound drops. How can I get it to stay loud? I have the stock exhaust.

Thanks for the info
Appreciate 0
      12-02-2016, 08:08 AM   #2
zenmaster
Brigadier General
United_States
1575
Rep
3,888
Posts

Drives: '17 M2
Join Date: Mar 2007
Location: Atlanta

iTrader: (1)

Sport settings or extra long press DSC button. Have no idea why DSC setting in comfort mode opens exhaust.
Appreciate 0
      12-02-2016, 08:22 AM   #3
Zigarum
Private
66
Rep
76
Posts

Drives: Z$ SDrive 2.3
Join Date: Mar 2012
Location: Switzerland

iTrader: (0)

Quote:
Originally Posted by zenmaster View Post
Sport settings or extra long press DSC button. Have no idea why DSC setting in comfort mode opens exhaust.
I heard about this mystery mode but forgot to try. If I drive in sports plus mode is the exhaust open by default?

Thanks
Appreciate 0
      12-02-2016, 08:25 AM   #4
zenmaster
Brigadier General
United_States
1575
Rep
3,888
Posts

Drives: '17 M2
Join Date: Mar 2007
Location: Atlanta

iTrader: (1)

I didn't think there was a difference in exhaust note between sport and sport+?
Appreciate 0
      12-02-2016, 08:46 AM   #5
Zigarum
Private
66
Rep
76
Posts

Drives: Z$ SDrive 2.3
Join Date: Mar 2012
Location: Switzerland

iTrader: (0)

Quote:
Originally Posted by zenmaster View Post
I didn't think there was a difference in exhaust note between sport and sport+?
But does holding down the DSC button in comfort mode make a different sound to simply putting it in sports mode?
Appreciate 0
      12-02-2016, 08:47 AM   #6
Nicname
Lieutenant Colonel
Nicname's Avatar
No_Country
348
Rep
1,681
Posts

Drives: 2021 M2C
Join Date: Oct 2011
Location: NJ

iTrader: (4)

In comfort or sport, just press DSC and you'll hear more pops when letting off the gas then in sport +.
__________________
Current: ///M2C
G01 X3 xDrive30i
Past: ///M2
997.1 Turbo
///M3 E92
Appreciate 0
      12-02-2016, 08:58 AM   #7
Zigarum
Private
66
Rep
76
Posts

Drives: Z$ SDrive 2.3
Join Date: Mar 2012
Location: Switzerland

iTrader: (0)

Quote:
Originally Posted by Nicname View Post
In comfort or sport, just press DSC and you'll hear more pops when letting off the gas then in sport +.
Guys thanks for the tips. Will try them in 20 mins :-)
Appreciate 0
      12-02-2016, 10:19 AM   #8
Elwood74
Private First Class
Elwood74's Avatar
United_States
76
Rep
187
Posts

Drives: 2017 M2
Join Date: Jun 2012
Location: NJ

iTrader: (0)

Garage List
Quote:
Originally Posted by Zigarum View Post
....

Quick question. When I start up the M2 it sounds awesome, it's so loud. After 6 seconds or so the sound drops. How can I get it to stay loud? I have the stock exhaust.
That is the cold startup process. No other "tricks" will get it back to that volume. Only closer or with more burbles
Appreciate 1
      12-03-2016, 06:24 PM   #9
Vitacura
Ich Liebe mein BMW
Vitacura's Avatar
United_States
413
Rep
887
Posts

Drives: 21 M240i CV, 23 X1
Join Date: May 2007
Location: Tampa Bay

iTrader: (0)

I got an exhaustmeister to keep the flaps open on my M5. Not sure if it would work with an M2.
Appreciate 0
      12-03-2016, 07:43 PM   #10
823BMW
Private First Class
823BMW's Avatar
United_States
183
Rep
113
Posts

Drives: 2020 X5, 2020 Tesla Y, 2020 Z4
Join Date: Aug 2014
Location: Florida

iTrader: (0)

From the F87 technical training guide posted here on Bimmerpost:

"The exhaust sound of the F87 BMW M2 is much more powerful and emotional than in the F2x standard vehicles. The exhaust flap is closed when the engine is idling with the vehicle stationary, in the lower engine speed range in all speed ranges and when the driving experience switch is in COMFORT position.

In the upper engine speed ranges, the flap opens depending on the load.

When the driving experience switch is in SPORT and SPORT+ positions, the exhaust flap is fully open when the engine is idling while the vehicle is stationary and in the lower gears.

In the higher gears, the exhaust flap is closed in the critical ranges. The same applies in the upper engine speed ranges depending on the load."

http://f87.bimmerpost.com/forums/att...2&d=1454979963
Appreciate 0
      12-04-2016, 05:56 AM   #11
slashrawr
Private First Class
slashrawr's Avatar
Australia
94
Rep
176
Posts

Drives: Passat R36
Join Date: Sep 2016
Location: Perth, WA

iTrader: (0)

Quote:
Originally Posted by Elwood74 View Post
That is the cold startup process. No other "tricks" will get it back to that volume. Only closer or with more burbles
This. It's just idling higher for a bit isn't it?
Appreciate 0
      12-04-2016, 07:18 AM   #12
dasblack
Second Lieutenant
79
Rep
200
Posts

Drives: BMW M2
Join Date: Nov 2015
Location: Southwest FL

iTrader: (0)

I got my exhaust baffolds programmed to stay open by my service asvisoor
Appreciate 0
      12-04-2016, 08:13 AM   #13
zenmaster
Brigadier General
United_States
1575
Rep
3,888
Posts

Drives: '17 M2
Join Date: Mar 2007
Location: Atlanta

iTrader: (1)

Quote:
Originally Posted by dasblack View Post
I got my exhaust baffolds programmed to stay open by my service asvisoor
Any downside to this?
Appreciate 0
      12-04-2016, 09:36 AM   #14
dasblack
Second Lieutenant
79
Rep
200
Posts

Drives: BMW M2
Join Date: Nov 2015
Location: Southwest FL

iTrader: (0)

Quote:
Originally Posted by zenmaster View Post
Quote:
Originally Posted by dasblack View Post
I got my exhaust baffolds programmed to stay open by my service asvisoor
Any downside to this?
Damn, I can't spell lol. None at all, it's slightly louder
Appreciate 0
      12-04-2016, 11:27 AM   #15
Minchy
New Member
8
Rep
27
Posts

Drives: M2 Mineral Grey 6MT
Join Date: Aug 2016
Location: UK

iTrader: (0)

You can buy a plug for the flapper valve to keep them open. Cant remember what the site was called though sorry.
__________________
M2
Scirocco R
Golf R
Appreciate 0
      12-05-2016, 04:23 AM   #16
Bmwbb
Private First Class
29
Rep
103
Posts

Drives: M2
Join Date: May 2016
Location: Hong Kong

iTrader: (0)

I have tried the following and I think it is louder than my f430 on startup: mpe track mode + sport+ and Dsc off.
Appreciate 0
      12-05-2016, 05:22 AM   #17
DivideBYZero
Never underestimate the Home-Bowl
DivideBYZero's Avatar
United Kingdom
484
Rep
821
Posts

Drives: F87 M2<E92 M3<E46 M3
Join Date: Jul 2011
Location: UK

iTrader: (0)

Garage List
Quote:
Originally Posted by slashrawr View Post
This. It's just idling higher for a bit isn't it?
The secondary air pump is also in operation during Cold Start.
__________________
2017 F87 M2, MG, M-DCT
2002 E36/7 Z3 2.2 Sport 5MT
2016 F22 M235i Coupe, MW, ZF8
Appreciate 2
      12-05-2016, 08:31 AM   #18
Elwood74
Private First Class
Elwood74's Avatar
United_States
76
Rep
187
Posts

Drives: 2017 M2
Join Date: Jun 2012
Location: NJ

iTrader: (0)

Garage List
Quote:
Originally Posted by DivideBYZero View Post
The secondary air pump is also in operation during Cold Start.
This is exactly why cold start sounds the way it does.
Appreciate 0
      12-06-2016, 09:10 AM   #19
slashrawr
Private First Class
slashrawr's Avatar
Australia
94
Rep
176
Posts

Drives: Passat R36
Join Date: Sep 2016
Location: Perth, WA

iTrader: (0)

Quote:
Originally Posted by DivideBYZero View Post
The secondary air pump is also in operation during Cold Start.
Cool. I learned something today.
Appreciate 0
      12-08-2016, 03:19 PM   #20
GetAlife75
Lieutenant
GetAlife75's Avatar
Switzerland
300
Rep
568
Posts

Drives: 2020 M340i xDrive Sedan
Join Date: Feb 2013
Location: Zürich

iTrader: (0)

Garage List
2018 BMW M3 CS  [0.00]
Quote:
Originally Posted by Zigarum View Post
So I've had my gorgeous black M2 since September and still loving it. I did scratch a wheel and cried a little, but I'm getting fixed and almost over it :-)

Quick question. When I start up the M2 it sounds awesome, it's so loud. After 6 seconds or so the sound drops. How can I get it to stay loud? I have the stock exhaust.

Thanks for the info
You scratched a wheel mate??? I think you need a new downpipe and turbo back exhaust.
Appreciate 0
Post Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 07:12 PM.




m2
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST