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2019+ BMW 3 AND 4-SERIES FORUMS (G2x Generation) General G20 Sedan / G22 Coupe / G26 Gran Coupe Discussions 2021 M340i vs 2020 M340i Exhaust Comparison Shows 2021 Sounds Different

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      11-12-2020, 11:45 AM   #133
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Quote:
Originally Posted by Skyhigh View Post
Never driven a hybrid (except a short test drive of en eTron), but the Start/Stop on my F36 is the best (least annoying) I have driven. I assumed I will be disabling it, but it is so smooth that it doesn't bother me at all.
The 2021s I have test drove do not even feel like Stop/start, in comfort mode when you press the gas the car just goes forward like it normally would as the emotor gets it rolling, no lag at all, not even the micro second the smoothest systems have waiting for the engine to kick back on

In sport mode the engine doesn't shut off and hybrid adds a kick in the pants for the second before the turbo boost comes on both off the line and at speed. All in all I was pretty impressed (and ordered one)

On the sound topic: I have already shared my POV that the low rpm and low engine load pops and crackles are excessive and happy to see the 2021s improve on that. Not even the worst overcammed big block pops and crackles that much. from my limited research it doesn't look like any part numbers were changed 2020 to 2021 so tone and volume should be the same where not managed by software (cold start, fake overrun)

Context for my opinions: I drive an 18 F32 with MPPSK, I keep stop/start off 100% of the time because I find it intrusive
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      11-12-2020, 03:21 PM   #134
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Quote:
Originally Posted by F85Matt View Post
See attached, his car sounded like crap in sport/plus etc.....his engine sound was in reduced -___-
You move up to the head of the class!

The exhaust sound was not changed in the M340i '21 MY, it's just now tied to the iDrive 7 (new) engine sound control's menu, independent from the Driver Experience control (Comfort, Sport, etc), as oppose to the prior model year..

I guarantee that the OP has the "Exhaust Sound" in Reduced mode (default setting), hence the reason for the toned down exhaust note..

So relax, you guys with a US spec vehicle still have your precious pops and burbles, to annoy the public with but it was entertaining seeing some lose their collective minds over what equates to nothing more than this classic Spinal Tap "11" video..

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      11-12-2020, 03:22 PM   #135
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Originally Posted by cnichols138 View Post
My car is a March 2019 build I swear I have more pops and bangs than other future builds on the M340. One article said it was because I have the original tune....then they detuned. No real proof but I get crazy pops with stock exhaust.
I had a 2/19 build had great power and great exhaust! The guy who got the car tells me how quick it is and the exhaust pop!
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      11-12-2020, 04:47 PM   #136
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Quote:
Originally Posted by Poochie View Post
Quote:
Originally Posted by F85Matt View Post
See attached, his car sounded like crap in sport/plus etc.....his engine sound was in reduced -___-
You move to the head of the class!

The exhaust sound was not changed in the M340i '21 MY, it's just now tied to the iDrive 7 (new) engine sound control's menu, independent from Driver Experience control (Comfort, Sport, etc), as oppose to the prior model year..

I guarantee that the OP has the "Exhaust Sound" in Reduced mode (default setting), hence the reason for the toned down exhaust note..

So relax, you guys with a US spec vehicle still have your precious pops and burbles, to annoy the public with but it was entertaining seeing some lose their collective minds over what equates to nothing more than this classic Spinal Tap "11" video..

Someone alert all the YouTube video makers, I would like to see them make this change and show the difference (if any) between the model years now. It would appear this solves the mystery and will make exhaust great again!
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      11-12-2020, 04:56 PM   #137
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Quote:
Originally Posted by F85Matt View Post
Quote:
Originally Posted by clee1982 View Post
Quote:
Originally Posted by F85Matt View Post
My bad man I'm an engineer major lol not English. The car will have Instant go when you mash it, one of the reasons for the mild hybrid system. Electric torque while the engine restarts, vs the old system being like your starter just engaging, and that's it. It's almost like driving the i8 in it's electric and gas setting, when you floor it in electric mode and the engine kicks in. Does that make sense?? If not call me and we can do a zoom convo with demonstration haha

It also doesn't shut off every time like in traffic etc, there's parameters to the system and when it does turn off, it's probably not a time you're about to punch it, but if you did you'd still have the instant go. My X3m and f80 are both set to off lol so personally the feature is stupid.
so would you say the stop and go is as good as hybrid (say 330e) if that's the case I would be just fine without the ability to disable it
F30, no
Was talking about the mold hybrid 48V in G20 if mild hybrid auto start stop is as good as g20 330e then I can see not needing disable it
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      11-12-2020, 04:56 PM   #138
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Quote:
Originally Posted by Graaf_Autowerks View Post
Quote:
Originally Posted by Poochie View Post
Quote:
Originally Posted by F85Matt View Post
See attached, his car sounded like crap in sport/plus etc.....his engine sound was in reduced -___-
Someone alert all the YouTube video makers, I would like to see them make this change and show the difference (if any) between the model years now. It would appear this solves the mystery and will make exhaust great again!

It's no mystery, this has been discussed and confirmed before on some of the latest X and 5 Series models but I understand your skepticism..

https://g05.bimmerpost.com/forums/sh....php?t=1685801
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      11-12-2020, 04:58 PM   #139
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Quote:
Originally Posted by Poochie View Post
Quote:
Originally Posted by F85Matt View Post
See attached, his car sounded like crap in sport/plus etc.....his engine sound was in reduced -___-
You move to the head of the class!

The exhaust sound was not changed in the M340i '21 MY, it's just now tied to the iDrive 7 (new) engine sound control's menu, independent from Driver Experience control (Comfort, Sport, etc), as oppose to the prior model year..

I guarantee that the OP has the "Exhaust Sound" in Reduced mode (default setting), hence the reason for the toned down exhaust note..

So relax, you guys with a US spec vehicle still have your precious pops and burbles, to annoy the public with but it was entertaining seeing some lose their collective minds over what equates to nothing more than this classic Spinal Tap "11" video..

Oh, so it IS now in iDrive! Fun, and finally!
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      11-12-2020, 05:08 PM   #140
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Quote:
Originally Posted by Blubaron79 View Post
Quote:
Originally Posted by Poochie View Post
Quote:
Originally Posted by F85Matt View Post
See attached, his car sounded like crap in sport/plus etc.....his engine sound was in reduced -___-
Oh, so it IS now in iDrive! Fun, and finally!
Actually, to be clear, this setting has only been confirmed for US Spec vehicles only, as certain regions in the world doesn't get the "Sporty" sound option in the iDrive menu i.e. so by the extension, no pops and burbles for those specific vehicles..
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      11-12-2020, 05:31 PM   #141
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Quote:
Originally Posted by TruthOne View Post
This Video Confirms the 2021 Exhaust note is different. Side by side comparison. This is very disappointing since I had to order a 21 model since the 2020's at dealers around here were terribly optioned.


Using Bootmod3 I can play around with burbles. I prefer to have exhaust pop only on upshift as would be proper and the rare very short burble on pedal lift at low rpm.

The actual sound of the engine is what I'd like to hear and miss from NA engines, especially the V8's (my e92 M3 sounded so good).

It feels like synthetic burble sounds appeared to compensate for the loss of NA exhaust note... to make them sound exciting again.

Wish we could code in the diverter valve or wastegate « whoosh » sounds my '03 stage 3 Jetta was so cool for that.
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      11-12-2020, 07:32 PM   #142
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Quote:
Originally Posted by Poochie View Post
The exhaust sound was not changed in the M340i '21 MY, it's just now tied to the iDrive 7 (new) engine sound control's menu, independent from Driver Experience control (Comfort, Sport, etc), as oppose to the prior model year..

I guarantee that the OP has the "Exhaust Sound" in Reduced mode (default setting), hence the reason for the toned down exhaust note..

So relax, you guys with a US spec vehicle
This new feature looks pretty cool actually. The B58 is a serious screamer so I can understand why the option to tone down the volume is available. I'm guessing "Sporty" brings out burbles and "Balanced" is still audible without burbles.
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      11-12-2020, 07:54 PM   #143
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Quote:
Originally Posted by Kuato2084 View Post
Quote:
Originally Posted by Poochie View Post
The exhaust sound was not changed in the M340i '21 MY, it's just now tied to the iDrive 7 (new) engine sound control's menu, independent from Driver Experience control (Comfort, Sport, etc), as oppose to the prior model year..

I guarantee that the OP has the "Exhaust Sound" in Reduced mode (default setting), hence the reason for the toned down exhaust note..

So relax, you guys with a US spec vehicle
This new feature looks pretty cool actually. The B58 is a serious screamer so I can understand why the option to tone down the volume is available. I'm guessing "Sporty" brings out burbles and "Balanced" is still audible without burbles.
Yes, "Sporty" activates the burbles but it is not an option on Euro spec vehicles, since their new noise ordinance rules and OPF, which is like a second cat, so heavy burbles can possible damage such filters..

From what I understand, the individual sound profile is tied the exhaust and ASD volume and is saved unto individual options, within the iDrive menu, outside of Sport or Sport+, unlike on the older models.

I like It, I'm not a prude but just not a fan of boisterous exhaust sound or attracting unnecessary attention to myself but I understand that's going thing now, so no judgment. Personally, I just like the idea of having the option to tone down (or up) the exhaust sound, at will..

However, this is just for the standard models, more that likely, future M cars with have a dedicated exhaust button, to toggle the sound (or burbles) intensity, like on the M5.
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      11-12-2020, 08:18 PM   #144
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Quote:
Originally Posted by Poochie View Post

You move to the head of the class!

The exhaust sound was not changed in the M340i '21 MY, it's just now tied to the iDrive 7 (new) engine sound control's menu, independent from Driver Experience control (Comfort, Sport, etc), as oppose to the prior model year..

I guarantee that the OP has the "Exhaust Sound" in Reduced mode (default setting), hence the reason for the toned down exhaust note..

So relax, you guys with a US spec vehicle still have your precious pops and burbles, to annoy the public with but it was entertaining seeing some lose their collective minds over what equates to nothing more than this classic Spinal Tap "11" video..

What software are you on? I'm on the 07.2020 (I know there's a new update that I haven't installed yet) but I don't have engine sound in my idrive menu
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      11-12-2020, 08:35 PM   #145
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Quote:
Originally Posted by Casone238 View Post
Quote:
Originally Posted by Poochie View Post
What software are you on? I'm on the 07.2020 (I know there's a new update that I haven't installed yet) but I don't have engine sound in my idrive menu
The discussion about the sound profile came up in X section and them mentioned that "Sporty" profile the iDrive mapping, directly affects the overrun (burbles) and ASD..

It's not really news but I guess folks wasn't aware that the new menu had a direct effect on the exhaust sound profile.

I'm not sure which software update it is tied to but someone here with a '21 can confirm it for you.


Engine Sound Setting Coding Tutorial w/ Bimmercode https://www.bimmerpost.com/forums/sh....php?t=1709333

New Engine Sound setting in iDrive? https://g20.bimmerpost.com/forums/sh....php?t=1727898
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      11-12-2020, 09:13 PM   #146
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Quote:
Originally Posted by Poochie View Post
Quote:
Originally Posted by F85Matt View Post
See attached, his car sounded like crap in sport/plus etc.....his engine sound was in reduced -___-
You move to the head of the class!

The exhaust sound was not changed in the M340i '21 MY, it's just now tied to the iDrive 7 (new) engine sound control's menu, independent from Driver Experience control (Comfort, Sport, etc), as oppose to the prior model year..

I guarantee that the OP has the "Exhaust Sound" in Reduced mode (default setting), hence the reason for the toned down exhaust note..

So relax, you guys with a US spec vehicle still have your precious pops and burbles, to annoy the public with but it was entertaining seeing some lose their collective minds over what equates to nothing more than this classic Spinal Tap "11" video..

If this is truly what controls the pops and burbles to be reduced vs loud and sporty, this is a pretty cool feature BMW added on since you can tone it down when needed if you get tired of it.

Now we just need someone to confirm since it does say "engine sound" and not "exhaust sound". Look forward to seeing a comparison.
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      11-12-2020, 09:36 PM   #147
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That thread seems to waffle between the thought that it's ASD and one guy that thinks it's ES.

I think it needs a test still...

Last edited by obscurehero; 11-13-2020 at 05:32 AM..
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      11-12-2020, 10:08 PM   #148
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I don't see a sound menu (and never have) on my MY20 running 07.2020 software
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      11-12-2020, 11:30 PM   #149
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you can check my video below. that's how it works for non EU models in sport mode… i have a german spec m340i and coded the menu few weeks ago with bimmercode. maybe that is new for 21 models.

for EU cars, you need to enable burble mode via bootmod, mhd or by a tuner of your choice before coding this. otherwise it won't Change anything.

so... if you have a 21 non EU car, you can try this menu. but i guess it should be activated in sport mode from factory allready!

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      11-13-2020, 03:11 AM   #150
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Quote:
Originally Posted by sq86 View Post
And yet the Genius' will tell you it's not that different. I brought this up to them a couple weeks ago and they brushed me off saying it's not that different. I also don't like the inability to disable the auto stop/start but I understand why.
Does it turn off in sport or sport+ mode?
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      11-13-2020, 06:48 AM   #151
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OP and/or someone else - we need a test for this. Let's see if indeed there is a setting for exhaust noise within the iDrive menu independent of engine driving mode. Would love to see a video comparison of that.
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      11-13-2020, 08:32 AM   #152
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I have a non-EU (U.S.) 2021 M340i with build date of mid-August 2020. I do not have this option in the iDrive menu.
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      11-13-2020, 09:02 AM   #153
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I also have a US-spec 2021 m340i that's a Sept/Oct build and don't see the engine sounds menu. Currently on software version 07/2020.32 with 07/2020.54 downloading.
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      11-13-2020, 09:15 AM   #154
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Quote:
Originally Posted by ///Mobbin View Post
I also have a US-spec 2021 m340i that's a Sept/Oct build and don't see the engine sounds menu. Currently on software version 07/2020.32 with 07/2020.54 downloading.
Keep us posted.
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