Engine Sound. M3 and M4 - explained, Episode 09

Tag · 02-09-2021, 01:32 AM

They literally have the car sitting on a dyno, but don't bother to rev it WOT and under load.

VIERsr · 02-09-2021, 06:52 AM

So we have the primary cats (red circle), secondary cats/OPFs (blue circle) and central resonator (green arrow), is it correct?

I'm surprised to see the primary cats so far from turbochargers.

RugbyBro · 02-10-2021, 12:05 AM

This doesn't sound fully equal length to me but definitely closer than stock S55. I'm sure someone aftermarket will realize the fully equal system. I will say it has a great induction noise

mmckenzie · 02-10-2021, 03:25 AM

Does anyone know if the base M3/M4 sound the same as Competition models?

Scorp!on · 02-10-2021, 03:28 AM

Quote:

Originally Posted by mmckenzie

Does anyone know if the base M3/M4 sound the same as Competition models?

In the Q/A it was asked and BMW confirmed they sound the same.

p.s.
I was convinced the button inside the cabin is just for the cabin reinforcement....they said it will go on quiet mode inside and outside. So no sound through speaker but also the valves closed...goddamnit BMW.... I hate this trend of reinforcing the sound through the speakers, who the hell asked for a stupid thing like that???

AlexFL · 02-10-2021, 12:53 PM

Quote:

Originally Posted by Scorp!on

In the Q/A it was asked and BMW confirmed they sound the same.

p.s.
I was convinced the button inside the cabin is just for the cabin reinforcement....they said it will go on quiet mode inside and outside. So no sound through speaker but also the valves closed...goddamnit BMW.... I hate this trend of reinforcing the sound through the speakers, who the hell asked for a stupid thing like that???

You can simply pull out the ASD plug. It literally takes 10 seconds to do.

thaalrasha · 02-10-2021, 12:54 PM

Quote:

Originally Posted by Scorp!on

In the Q/A it was asked and BMW confirmed they sound the same.

p.s.
I was convinced the button inside the cabin is just for the cabin reinforcement....they said it will go on quiet mode inside and outside. So no sound through speaker but also the valves closed...goddamnit BMW.... I hate this trend of reinforcing the sound through the speakers, who the hell asked for a stupid thing like that???

Probably / hopefully, it'll be possible to code out ASD like on the F gen.

Sedan_Clan · 02-10-2021, 12:54 PM

I think it sounds really good.

m20e3087 · 02-10-2021, 01:22 PM

Quote:

Originally Posted by VIERsr

So we have the primary cats (red circle), secondary cats/OPFs (blue circle) and central resonator (green arrow), is it correct?

I'm surprised to see the primary cats so far from turbochargers.

True. So I guess for catless DP pipe will have to be cut rather that plug and play like the S55.

PABrian · 02-10-2021, 01:48 PM

Quote:

Originally Posted by Scorp!on

In the Q/A it was asked and BMW confirmed they sound the same.

p.s.
I was convinced the button inside the cabin is just for the cabin reinforcement....they said it will go on quiet mode inside and outside. So no sound through speaker but also the valves closed...goddamnit BMW.... I hate this trend of reinforcing the sound through the speakers, who the hell asked for a stupid thing like that???

Paying customers. In fact, enough paying customers that numerous brands do this now. You should hear Audi...theirs effectively replaces engine and exhaust sound because it's so prominent.

People demand isolation from road and wind noise. When you do that, you also shut out engine and exhaust noise. This is a way of having both...for better or worse.

I'll add this...the same is true for exterior noise. You have to comply with noise regulations (and desires) all around the world, which end up quieting down the exhaust. Combine that with the increase in sound deadening, and you're losing even more sound inside the cabin.

V-Eight · 02-10-2021, 02:01 PM

just to make you guys aware of the fact that there are no differences between the EU version complete exhaust system and the american one in the supplier code data bank. I guess that also the US version will have the OPF from what I read from it. It doesn't matter as they fixed the sound compared to the F80.

SteveChester · 02-10-2021, 02:17 PM

Quote:

Originally Posted by SteveChester

Thanks

@Mani59 well claimed

kyleb350 · 02-10-2021, 02:38 PM

Quote:

Originally Posted by m20e3087

True. So I guess for catless DP pipe will have to be cut rather that plug and play like the S55.

Quote:

Originally Posted by V-Eight

just to make you guys aware of the fact that there are no differences between the EU version complete exhaust system and the american one in the supplier code data bank. I guess that also the US version will have the OPF from what I read from it. It doesn't matter as they fixed the sound compared to the F80.

I wonder if the OPFs are actually in the red circle above then (with the primaries out of view).

TargaM2 · 02-10-2021, 02:41 PM

1st mod - resonator delete.

Encanto · 02-10-2021, 02:47 PM

Quote:

Originally Posted by AlexFL

You can simply pull out the ASD plug. It literally takes 10 seconds to do.

No ASD plug to pull in the RAM.

Encanto · 02-10-2021, 02:54 PM

Quote:

Originally Posted by VIERsr

So we have the primary cats (red circle), secondary cats/OPFs (blue circle) and central resonator (green arrow), is it correct?

Sounds like (pun intended) this setup will be better by replacing the secondary cats with individual resonators, and the OEM resonator with an X-pipe.

Scorp!on · 02-10-2021, 03:04 PM

Quote:

Originally Posted by AlexFL

You can simply pull out the ASD plug. It literally takes 10 seconds to do.

oh really ?
I just saw a YT video where it looked quiet complicated..
you may have a how to or something ?
Is it on the G80 the same as F80 ?

AlexFL · 02-10-2021, 03:11 PM

Quote:

Originally Posted by Scorp!on

oh really ?
I just saw a YT video where it looked quiet complicated..
you may have a how to or something ?
Is it on the G80 the same as F80 ?

On the F97 (X3M) it's very easy. I can share a video.

It's the left side compartment in the trunk

ShockArrival · 02-10-2021, 04:51 PM

Those two sound junkies are...characters!

It definitely sounds much better than a stock F80, subjectively of course!

Boss330 · 02-10-2021, 05:18 PM

Quote:

Originally Posted by V-Eight

just to make you guys aware of the fact that there are no differences between the EU version complete exhaust system and the american one in the supplier code data bank. I guess that also the US version will have the OPF from what I read from it. It doesn't matter as they fixed the sound compared to the F80.

In the Q&A they replied that the US version does not have the OPF.

solstice · 02-10-2021, 06:09 PM

I like it, the clean, hard metallic engine sound dominates and just a few deep exhaust notes/burbles on lift off isn’t distracting. Well done.

Fugly M3 · 02-10-2021, 06:22 PM

Forget the sound, what is that awesome brown color?!

02-09-2021, 01:32 AM	#23
Tag this is the way 18122 Rep 8,513 Posts Drives: N-1 starfighter Join Date: Jan 2007 Location: Chicago iTrader: (3)	They literally have the car sitting on a dyno, but don't bother to rev it WOT and under load.
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02-09-2021, 06:52 AM	#24
VIERsr Major 2622 Rep 1,477 Posts Drives: BMW M2 Join Date: Apr 2018 Location: Zurich iTrader: (0) Garage List 2019 M2 Competition [0.00]	So we have the primary cats (red circle), secondary cats/OPFs (blue circle) and central resonator (green arrow), is it correct? I'm surprised to see the primary cats so far from turbochargers.
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02-10-2021, 12:05 AM	#25
RugbyBro Brigadier General 7601 Rep 3,603 Posts Drives: M3 Join Date: Jun 2019 Location: Seattle iTrader: (0)	This doesn't sound fully equal length to me but definitely closer than stock S55. I'm sure someone aftermarket will realize the fully equal system. I will say it has a great induction noise __________________ Current: F80 Prior: F82, F32
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02-10-2021, 03:25 AM	#26
mmckenzie Private 217 Rep 78 Posts Drives: 2021 G80 M3 6MT (BSM) Join Date: Feb 2021 Location: NJ iTrader: (0)	Does anyone know if the base M3/M4 sound the same as Competition models?
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02-10-2021, 12:54 PM	#30
Sedan_Clan Law Enforcer 24976 Rep 22,265 Posts Drives: '22 Chalk Gray Porsche C2S Join Date: Jun 2006 Location: ..in your rearview!!! iTrader: (26)	I think it sounds really good.
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02-10-2021, 02:01 PM	#33
V-Eight Captain 792 Rep 775 Posts Drives: MY22 M3 G80 Comp.Xdrive Join Date: Aug 2016 Location: Italy iTrader: (0)	just to make you guys aware of the fact that there are no differences between the EU version complete exhaust system and the american one in the supplier code data bank. I guess that also the US version will have the OPF from what I read from it. It doesn't matter as they fixed the sound compared to the F80. __________________ ///M3 Competition xDrive Skyscraper Gray - full black Merino BMW G80 M3 Comp.xDrive 2022 + Jaguar F-Pace SVR v8 2022 + BMW F20 M140i RWD 2017
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02-10-2021, 02:41 PM	#36
TargaM2 M///modifyer 2489 Rep 1,295 Posts Drives: M2 Join Date: Feb 2008 Location: OZ iTrader: (0) Garage List 2015 Renault RS275R [9.50] 2019 Renault RS280 [10.00] 2017 BMW M2 [10.00] 2018 Audi Q2 [5.50]	1st mod - resonator delete. __________________ www.tarmacperformance.com Best Modified BMW - BMW Nationals 2022
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02-10-2021, 04:51 PM	#41
ShockArrival Lieutenant 496 Rep 494 Posts Drives: G80 Search Join Date: Sep 2017 Location: STL iTrader: (0) Garage List 2014 BMW M5 [0.00]	Those two sound junkies are...characters! It definitely sounds much better than a stock F80, subjectively of course! __________________ Hunting for a G80 \| 997 911 C2S AS/Blk 6MT SC SOUL
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02-10-2021, 06:09 PM	#43
solstice Major General 5457 Rep 7,037 Posts Drives: 2015 M3 6MT Join Date: May 2013 Location: Seattle iTrader: (0)	I like it, the clean, hard metallic engine sound dominates and just a few deep exhaust notes/burbles on lift off isn’t distracting. Well done.
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02-10-2021, 06:22 PM	#44
Fugly M3 Major General 5029 Rep 5,093 Posts Drives: 2023 M3CX Join Date: May 2006 Location: SoCal iTrader: (5)	Forget the sound, what is that awesome brown color?! __________________ 2024 M4CX M2C PCD M2C Mountain West Roadie M4 Cross Country Roadie 2017 230i ED 2023 G87 Nurburgring Trip
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