M2 CS Exhaust....way too quiet?

tizzyd · 12-23-2020, 06:27 PM

Hey guys! Just got my M2 CS today...BSM/6MT/GLD (Cup2)/Steel brakes. Car looks the absolute business....but I am so disappointed by the sound. I had an M2C before this and it was WAY louder, including pops and bangs. This is supposed to be the more hardcore model, why is it so quiet? Are the US cars getting the OPF now too? I did look in ETK and the part number for the CS muffler is different (center section is the same) I checked and the flaps are open in sport plus....

medphysdave · 12-23-2020, 06:34 PM

Nice spec

. The guys doing the work on my car thought the CS already sounded much better than most S55 equipped cars. I still thought it sounded like trash, but they've heard more of them than I have. I prefer it quiet after my last car, which was not quiet.

sdhotwn · 12-23-2020, 06:49 PM

I did not think it was at all quiet. Much much louder than the MPE on my F30. It was also shockingly loud when running out under an overpass. Additionally a friend said he heard me a block before I got there and I didn't even cross 4k or half throttle on approach.

kyrocks · 12-23-2020, 07:01 PM

I agree with the OP. It is significantly quieter than the MPE on my 2020 M2C. It needs to be louder. I only have 130 miles on it though. The MPE on my comp took about 2000 miles to sound awesome. I'm not sure if the 1200 mile service on the CS "unlocks" some sound or power either...maybe?

Wah · 12-23-2020, 08:06 PM

On my M4 I was able to unplug the valves when they were fully open to keep them open all the time. This made a huge improvement in sound, especially on cold starts. I would imagine this is possible on the m2, isn't it?

///M2CS · 12-23-2020, 10:15 PM

Same analysis

I. Found the solution

F87EVO · 12-24-2020, 01:09 AM

Quote:

Originally Posted by tizzyd

Hey guys! Just got my M2 CS today...BSM/6MT/GLD (Cup2)/Steel brakes. Car looks the absolute business....but I am so disappointed by the sound. I had an M2C before this and it was WAY louder, including pops and bangs. This is supposed to be the more hardcore model, why is it so quiet? Are the US cars getting the OPF now too? I did look in ETK and the part number for the CS muffler is different (center section is the same) I checked and the flaps are open in sport plus....

Just buy a midpipe , the difference is huge ! Especially in Europe !

Moris · 12-24-2020, 02:53 AM

Quote:

Originally Posted by ///M2CS

Same analysis

I. Found the solution

https://f87.bimmerpost.com/forums/at...1&d=1608783339

Just out of curiosity, did you install only the Slip-On silencer or the Evolution link pipe too?

-

NathObeaN · 12-24-2020, 03:34 AM

Quote:

Originally Posted by Bimmercs

Quote:

Originally Posted by tizzyd

Hey guys! Just got my M2 CS today...BSM/6MT/GLD (Cup2)/Steel brakes. Car looks the absolute business....but I am so disappointed by the sound. I had an M2C before this and it was WAY louder, including pops and bangs. This is supposed to be the more hardcore model, why is it so quiet? Are the US cars getting the OPF now too? I did look in ETK and the part number for the CS muffler is different (center section is the same) I checked and the flaps are open in sport plus....

Just buy a midpipe , the difference is huge ! Especially in Europe !

Yeah... and illegal 👎. Not sure why people keep suggesting to "just remove the OPF" when it is illegal and will void your insurance. God forbid you are ever involved in a fatal accident, you'd be sent away for a long time. Sorry to be 'that guy' but it's frustrating that the only 'good' option is to play with fire and people just casually promote it.

F87EVO · 12-24-2020, 04:22 AM

What means illegal ? Do you drive your car legal then ? Do you keep the speed limits? if you can just drive and hear nothing just do it. i could not drive and hear ''nothing'' . Sound is very important for some people. F**k the warranty and insurance, better if the car has a problem now which i am in warranty than then when i ll be out , because i would do it for sure . thats why i did it from now. its a very important part of the driving experience that sucks not because of BMW but because of regulations. OPFs and DPFs are parts that makes the turbo hotter , and in some 80k km need to be replaced because of gases stuck there etc. There is no option , i wanted the car to be and look stock , i didnt wanted to change the rear muffler , i love the exhaust tips , and didn;t like to change the muffler. the cs racing has the same muffler , but deleted the opfs and downpipes. Sounds great. So if you fear about insurance - which by the way here insurance has nothing to do with this kind of things , its just the warranty that is affected and again , it depends on your relationship with them.

Gunnerforlife · 01-13-2021, 10:24 PM

Does the valve close on the M2 CS exhasut every time the car stands still? I'm used to the valve staying open as long as I'm in sport or sport plus, but I don't hear the opening until I move.

12-23-2020, 06:27 PM	#1
tizzyd Captain 238 Rep 610 Posts Drives: 2011 335i 6MT Join Date: Feb 2008 Location: USA iTrader: (0) Garage List 2003.5 BMW M3 [0.00] 2011 335i Coupe [8.50]	M2 CS Exhaust....way too quiet? Hey guys! Just got my M2 CS today...BSM/6MT/GLD (Cup2)/Steel brakes. Car looks the absolute business....but I am so disappointed by the sound. I had an M2C before this and it was WAY louder, including pops and bangs. This is supposed to be the more hardcore model, why is it so quiet? Are the US cars getting the OPF now too? I did look in ETK and the part number for the CS muffler is different (center section is the same) I checked and the flaps are open in sport plus.... __________________ 2007 E60 M5 6MT (Interlagos/Silverstone Full) \| 2013 F10 M5 6MT (Imola Red/Black Full) \| 2022 BMW M5 CS (Brands Hatch Grey) \| 2006 E46 M3 Comp 6MT (Silver Grey/Black, CSL clone) \| 2011.5 E92 M3 (Fire Orange/Black Recaros, 4.6L Stroker, GTS Clone) \| 2011 1M (Valencia Orange/Black)
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12-23-2020, 06:34 PM	#2
medphysdave Brigadier General 4551 Rep 4,659 Posts Drives: M2 CS \| 85 of 592 Join Date: Apr 2015 Location: Charlotte, NC iTrader: (3)	Nice spec . The guys doing the work on my car thought the CS already sounded much better than most S55 equipped cars. I still thought it sounded like trash, but they've heard more of them than I have. I prefer it quiet after my last car, which was not quiet.
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12-23-2020, 06:49 PM	#3
sdhotwn Mmmm... Bavarian 2129 Rep 1,690 Posts Drives: M2 CS, X5 45e, i3, Cayman S Join Date: Apr 2014 Location: Wisconsin, USA iTrader: (0)	I did not think it was at all quiet. Much much louder than the MPE on my F30. It was also shockingly loud when running out under an overpass. Additionally a friend said he heard me a block before I got there and I didn't even cross 4k or half throttle on approach. __________________ M2 CS 2023 CB X5 45e 2018 i3 94 2014 Cayman S
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12-23-2020, 07:01 PM	#4
kyrocks Lieutenant 1071 Rep 534 Posts Drives: 2023 M3 Touring Join Date: May 2020 Location: Limassol iTrader: (0)	I agree with the OP. It is significantly quieter than the MPE on my 2020 M2C. It needs to be louder. I only have 130 miles on it though. The MPE on my comp took about 2000 miles to sound awesome. I'm not sure if the 1200 mile service on the CS "unlocks" some sound or power either...maybe?
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12-23-2020, 08:06 PM	#5
Wah IG@i.am.wah 2779 Rep 3,815 Posts Drives: M2 CS Join Date: Jul 2009 Location: NJ iTrader: (4) Garage List 2022 Tesla Model Y ... [0.00] 1974 BMW 2002 [0.00] 2020 BMW M2 CS [0.00]	On my M4 I was able to unplug the valves when they were fully open to keep them open all the time. This made a huge improvement in sound, especially on cold starts. I would imagine this is possible on the m2, isn't it?
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12-23-2020, 10:15 PM	#6
///M2CS Lieutenant 1151 Rep 467 Posts Drives: M2 CS Join Date: Jun 2019 Location: France iTrader: (0)	Same analysis I. Found the solution Attached Images __________________ ///M2 CS MB - M-DCT-2 NH - GLD 763M - Cup2
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12-24-2020, 04:22 AM	#10
F87EVO Major 4031 Rep 1,231 Posts Drives: BMW F87 M2 CS (6MT) Join Date: Jan 2018 Location: Europa iTrader: (0) Garage List 2020 BMW F87 M2 CS [9.96]	What means illegal ? Do you drive your car legal then ? Do you keep the speed limits? if you can just drive and hear nothing just do it. i could not drive and hear ''nothing'' . Sound is very important for some people. Fk the warranty and insurance, better if the car has a problem now which i am in warranty than then when i ll be out , because i would do it for sure . thats why i did it from now. its a very important part of the driving experience that sucks not because of BMW but because of regulations. OPFs and DPFs are parts that makes the turbo hotter , and in some 80k km need to be replaced because of gases stuck there etc. There is no option , i wanted the car to be and look stock , i didnt wanted to change the rear muffler , i love the exhaust tips , and didn;t like to change the muffler. the cs racing has the same muffler , but deleted the opfs and downpipes. Sounds great. So if you fear about insurance - which by the way here insurance has nothing to do with this kind of things , its just the warranty that is affected and again , it depends on your relationship with them. __________________ Sometimes, the simplest recipes, done well, with quality ingredients, are the tastiest, - evo Car of the Year 2020 2020 BMW F87 M2 CS - 6MT - Misano Blue Metallic**
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01-13-2021, 10:24 PM	#11
Gunnerforlife Private First Class 351 Rep 170 Posts Drives: 17GTI & M4CSL- Ex M2CS & M3CS Join Date: Mar 2019 Location: Boston iTrader: (0)	Does the valve close on the M2 CS exhasut every time the car stands still? I'm used to the valve staying open as long as I'm in sport or sport plus, but I don't hear the opening until I move.
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