BMW M4 CSL Gets BIG Sound Upgrade From Valvetronic Exhaust!

Valvetronic Designs · 11-23-2022, 02:17 PM

Featured on BIMMERPOST.com

Hey everyone,
We are so fortunate to share this opportunity we had earlier to make a future classic sound as special as it truly is!

THE STORY:
This car comes courtesy of one of our longtime Valvetronic Customers. Having owned many vehicles from McLarens, Porsches and beyond, this customer has great taste and was super excited for the CSL. The customer received the car about one month ago and quickly took care of the break-in miles and enjoyed his first track day. The feedback we received from the customer about the car was sensational. Truly a big step beyond the normal M4 competition. As is the current state of regulations today, the CSL suffers from the same problem as all G8X, even with the addition of the titanium back box. The car does not have the aggressive sound to back up the very aggressive performance. Having been able to enjoy the car in person myself, this is quite a step up from the traditional M4 competition, the way the transmission shifts, the steering, and the overall firmness of the experience feels a lot more thoroughbred than the traditional M4 competition. Dial the car back into the comfort and it's still extremely stiff. What was disheartening was no matter how hard you pushed the car the sound was never very fruity.

THE FACTORY SETUP:
The factory muffler on the CSL is the only part of the exhaust that is titanium. You can see in the pictures attached below there are clamps where the rear muffler casing is located. The rest of the piping from the rear of the back box all the way to the front of the vehicle is exactly the same as a traditional BMW M4 competition. This new back box doesn't change the sound much but adds a little bit of a unique flare to the sound. There is not a noticeable volume change compared to an M4 competition but the sound is slightly different. Additionally, the pops and cracks have been increased in order to give more emotion.

THE UPGRADE:
After working with a customer at length and experiencing the car for ourselves in person we agreed that the single Valvetronic mid pipe would be the ideal sound solution for the vehicle. This mid-pipe works with the new titanium back box and gives a very aggressive sound but is not overbearing. Perfect for track use and enjoyment on the street. The sound is roughly 30% to 40% louder than the factory and the sound quality is significantly increased. With a single mid pipe installed the exhaust tones are deeper and more enjoyable in the cabin and the experience remains rasp free on the exterior with a smooth sound all the way to the red line. With the car in sport plus, the cracks are super aggressive on overrun and the experience is far improved. A great solution for a vehicle that deserves to sing!

The video link is attached here. Take a moment to enjoy and comment on what you think of the sound!

Wishing you all a wonderful Thanksgiving!
-Austin

forumlurker · 11-23-2022, 04:10 PM

sounds good. i wonder if its the titanium rear giving it that extra exotic sound.

mike@x-ph.com · 11-24-2022, 10:25 AM

Awesome, thank you for sharing

ScottsG80M3 · 11-24-2022, 10:58 AM

Quote:

Originally Posted by forumlurker

sounds good. i wonder if its the titanium rear giving it that extra exotic sound.

Sounds great! Wonder how much this Ti OEM rear goes for.. anyone know?

Nkr15 · 11-24-2022, 04:23 PM

Quote:

Originally Posted by ScottsG80M3

Quote:

Originally Posted by forumlurker

sounds good. i wonder if its the titanium rear giving it that extra exotic sound.

Sounds great! Wonder how much this Ti OEM rear goes for.. anyone know?

https://www.bmwpartspros.com/oem-par...20-18309505068

I think it's this one but I'd still get confirmation.

jct_m3 · 11-28-2022, 05:38 PM

Sound is interesting. prolly gotta hear in person.

ScullyD · 11-28-2022, 05:55 PM

I wish there was a way to tune out the overrun cracks. I just think it degrades from the experience of the car.

flsupraguy · 11-28-2022, 06:26 PM

Quote:

Originally Posted by ScullyD

I wish there was a way to tune out the overrun cracks. I just think it degrades from the experience of the car.

This times 9 trillion

frozen773 · 11-28-2022, 07:40 PM

Quote:

Originally Posted by ScullyD

I wish there was a way to tune out the overrun cracks. I just think it degrades from the experience of the car.

Agreed

YKIGI · 11-28-2022, 10:19 PM

Thanks for sharing. These M cars a still a no for me in the sound department

COChris · 11-29-2022, 09:07 AM

Quote:

Originally Posted by ScullyD

I wish there was a way to tune out the overrun cracks. I just think it degrades from the experience of the car.

Easily accomplished with BM3

nicksm3 · 11-29-2022, 09:27 AM

meh....does nothing for me, these new platforms are just a let down. All the same noise - farts, crackles, burbles, pops.

G MONEY · 11-29-2022, 09:51 AM

Quote:

Originally Posted by YKIGI

Thanks for sharing. These M cars a still a no for me in the sound department

YES!!!!! It's horribly bad. Sad sad sad

static_void · 11-29-2022, 11:46 AM

Going to be honest - I'd be pretty disappointed with that sound if I shelled out the $$$ for the mid-pipe and that's what it sounded like after. This platform is begging to have the exhaust completely overhauled, if anything.

Limegrntaln · 11-29-2022, 12:00 PM

You guys are being so hard on the guy, the car is for sale in the classifieds.

stevehifi · 11-29-2022, 12:10 PM

I see yellow springs on the rear - is that factory or KW HAS?

nicksm3 · 11-29-2022, 04:02 PM

Quote:

Originally Posted by stevehifi

I see yellow springs on the rear - is that factory or KW HAS?

Aftermarket probably KW

AndroidRobot · 11-29-2022, 09:32 PM

Quote:

Originally Posted by Limegrntaln

You guys are being so hard on the guy, the car is for sale in the classifieds.

Different car I believe. This one I has MA plates while the other is registered in MT

Limegrntaln · 11-29-2022, 09:39 PM

Quote:

Originally Posted by AndroidRobot

Different car I believe. This one I has MA plates while the other is registered in MT

I didn't go back and look at it. It was from memory. I need to start wearing glasses. Old sneaks up on you.

AndroidRobot · 11-29-2022, 10:11 PM

Quote:

Originally Posted by Limegrntaln

I didn't go back and look at it. It was from memory. I need to start wearing glasses. Old sneaks up on you.

They look to be a very similar spec so I don't blame you

Limegrntaln · 11-29-2022, 10:45 PM

Quote:

Originally Posted by AndroidRobot

They look to be a very similar spec so I don't blame you

I think what probably got me, was, I think even the license plates were close to the same colors.

adc · 11-30-2022, 08:39 AM

Quote:

Originally Posted by ScullyD

I wish there was a way to tune out the overrun cracks. I just think it degrades from the experience of the car.

Absolutely.

11-23-2022, 02:17 PM	#1
Valvetronic Designs BimmerPost Supporting Vendor 27 Rep 13 Posts Drives: G80 M3 Join Date: Oct 2022 Location: Quakertown Pennsylvania iTrader: (0)	BMW M4 CSL Gets BIG Sound Upgrade From Valvetronic Exhaust! Featured on BIMMERPOST.com Hey everyone, We are so fortunate to share this opportunity we had earlier to make a future classic sound as special as it truly is! THE STORY: This car comes courtesy of one of our longtime Valvetronic Customers. Having owned many vehicles from McLarens, Porsches and beyond, this customer has great taste and was super excited for the CSL. The customer received the car about one month ago and quickly took care of the break-in miles and enjoyed his first track day. The feedback we received from the customer about the car was sensational. Truly a big step beyond the normal M4 competition. As is the current state of regulations today, the CSL suffers from the same problem as all G8X, even with the addition of the titanium back box. The car does not have the aggressive sound to back up the very aggressive performance. Having been able to enjoy the car in person myself, this is quite a step up from the traditional M4 competition, the way the transmission shifts, the steering, and the overall firmness of the experience feels a lot more thoroughbred than the traditional M4 competition. Dial the car back into the comfort and it's still extremely stiff. What was disheartening was no matter how hard you pushed the car the sound was never very fruity. THE FACTORY SETUP: The factory muffler on the CSL is the only part of the exhaust that is titanium. You can see in the pictures attached below there are clamps where the rear muffler casing is located. The rest of the piping from the rear of the back box all the way to the front of the vehicle is exactly the same as a traditional BMW M4 competition. This new back box doesn't change the sound much but adds a little bit of a unique flare to the sound. There is not a noticeable volume change compared to an M4 competition but the sound is slightly different. Additionally, the pops and cracks have been increased in order to give more emotion. THE UPGRADE: After working with a customer at length and experiencing the car for ourselves in person we agreed that the single Valvetronic mid pipe would be the ideal sound solution for the vehicle. This mid-pipe works with the new titanium back box and gives a very aggressive sound but is not overbearing. Perfect for track use and enjoyment on the street. The sound is roughly 30% to 40% louder than the factory and the sound quality is significantly increased. With a single mid pipe installed the exhaust tones are deeper and more enjoyable in the cabin and the experience remains rasp free on the exterior with a smooth sound all the way to the red line. With the car in sport plus, the cracks are super aggressive on overrun and the experience is far improved. A great solution for a vehicle that deserves to sing! The video link is attached here. Take a moment to enjoy and comment on what you think of the sound! Wishing you all a wonderful Thanksgiving! -Austin Attached Images
	Appreciate 10 FrankieNuo704.50 forumlurker717.50 ScottsG80M315.00 Jason35729.50 M3 boi2772.00 SapphireBaby21.00 T0RM3NT2123.00 02M3ForMe2836.50 MadBimmeRad5135.00 Kid on a Tricycle52.50 Tweet Quote

11-23-2022, 04:10 PM	#2
forumlurker Lieutenant 718 Rep 403 Posts Drives: almost every day Join Date: Sep 2022 Location: g80.g82 forums iTrader: (0)	sounds good. i wonder if its the titanium rear giving it that extra exotic sound.
	Appreciate 2 vitipr77.50 SapphireBaby21.00 Quote

11-24-2022, 10:25 AM	#3
mike@x-ph.com BimmerPost Supporting Vendor 19529 Rep 179,438 Posts Drives: 07-335/12-328/18-M4/21-M4CP Join Date: Sep 2013 Location: Las Vegas iTrader: (22)	Awesome, thank you for sharing __________________ UP TO $500 OFF - CLICK HERE https://x-ph.com/sale/ Phone number 702-494-9435
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11-28-2022, 05:38 PM	#6
jct_m3 Captain 2242 Rep 825 Posts Drives: 2022 BMW M3 Join Date: Nov 2020 Location: NY iTrader: (0) Garage List 2022 BMW M3 COMPETI ... [10.00]	Sound is interesting. prolly gotta hear in person. __________________ IG : bmw_jose
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11-28-2022, 05:55 PM	#7
ScullyD Senior 1Addict 3996 Rep 2,074 Posts Drives: BMW iX, M4 CSL Join Date: Jan 2008 Location: NJ iTrader: (0) Garage List 2023 BMW M4 CSL [0.00] 2022 BMW iX [0.00]	I wish there was a way to tune out the overrun cracks. I just think it degrades from the experience of the car.
	Appreciate 6 MotorenWerkeN52111.50 frozen77337.50 KB771.50 Blindside_1375852.50 MadBimmeRad5135.00 static_void466.00 Quote

11-28-2022, 10:19 PM	#10
YKIGI First Lieutenant 226 Rep 380 Posts Drives: Quadrifoglio Join Date: Sep 2013 Location: CT iTrader: (2)	Thanks for sharing. These M cars a still a no for me in the sound department
	Appreciate 2 nicksm3832.50 static_void466.00 Quote

11-29-2022, 09:27 AM	#12
nicksm3 Colonel 833 Rep 2,238 Posts Drives: e92 m3 Competition Join Date: Jun 2014 Location: Westchester NY iTrader: (6)	meh....does nothing for me, these new platforms are just a let down. All the same noise - farts, crackles, burbles, pops.
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11-29-2022, 11:46 AM	#14
static_void Private First Class 466 Rep 128 Posts Drives: '22 M3 Competition xDrive Join Date: Oct 2022 Location: Colorado iTrader: (0)	Going to be honest - I'd be pretty disappointed with that sound if I shelled out the $$$ for the mid-pipe and that's what it sounded like after. This platform is begging to have the exhaust completely overhauled, if anything.
	Appreciate 0 Quote

11-29-2022, 12:00 PM	#15
Limegrntaln Major General 9555 Rep 5,475 Posts Drives: 2022 DG/BLk xDrive M4C Wk 34 Join Date: Mar 2008 Location: Sacramento Area iTrader: (3) Garage List 2022 G82 M4 Competi ... [10.00]	You guys are being so hard on the guy, the car is for sale in the classifieds. __________________ 2022 Dravit Gray/Black Full Merino M4 Competition M xDrive / Production Week 34/ Delivered 10/19/21/ IG: dravit_m4_comp YT: G Dubyou
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11-29-2022, 12:10 PM	#16
stevehifi Captain 495 Rep 852 Posts Drives: 17 F80 M3 ZCP Join Date: May 2008 Location: Irvine,CA iTrader: (5)	I see yellow springs on the rear - is that factory or KW HAS?
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