01-18-2021, 08:35 AM | #23 |
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Same here, Coming from my M3CS which was much louder. When I got the car I thought my valve control was not working. I hope it gets louder, I only have 190 miles on it.
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01-18-2021, 10:02 AM | #24 |
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If you sit in idle or low revs, and change between comfort, sport, and sport+, you will hear a difference at each setting. Not a big difference, but there is a difference.
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01-18-2021, 02:39 PM | #26 |
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Btw there is a difference between the exhaust note and the fake induction noise thats pump into the cabin. The fake induction noise in the M2 CS cabin sounds perfectly fine to me!
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01-19-2021, 02:27 AM | #27 |
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I am not sure , if there is any fake noise.. it sounds so mechanical to me , used to have the OG M2 before , and i could easily tell about the fake sound as soon as i open my windows.
I ve installed the Active Autowerke single midpipe , delete the opf . The car sounds perfect now , even some pops and bangs ! I love the original exhaust tips , just so simple. Also , i noticed that my car needs around 3 minutes from cold start to open to valves. Then , when i am on Sport + mode the exhaust valves open when i have my foot on throttle. Then regardless driving mode , the exhaust valves are open . When i am trying to park tho , again regardless driving mode , when i dont have my foot on the throttle , i can hear the valves that close , as soon as i slowly touch the throttle , the valves open again. But i love driving the car on comfort too , because the volume is there !
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01-19-2021, 07:06 AM | #28 |
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I have definitely noticed a louder exhaust note in Sport+. I think the volume is perfect. I don't think I'm hearing any fake cabin noise, but it's really hard to tell. Either this car doesn't have that or they've done a very good job of blending it in properly.
Even in sport+, the car is definitely quieter than my 1M with MadDad mid pipe and lightweight titanium slip-on, but that is a welcome change. For a daily driver, this is exactly what I was looking for.
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01-19-2021, 07:12 AM | #29 |
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Has anyone tried unplugging the valves with them open? This is something we did with the M3/M4 to easily improve the sound of the stock exhaust. Open up the valves (rev in sport+), then shut off the engine, then unplug both valve actuators which keeps them open all the time. I'm assuming the procedure is the same on the s55 M2
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MadBimmeRad7107.00 |
01-31-2021, 05:27 PM | #30 | |
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01-31-2021, 06:32 PM | #31 |
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On a stock car the valves open and close at different times even if you are in Sport+ mode. You have to make them stay open all the time if you want that.
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01-31-2021, 06:56 PM | #32 | |
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01-31-2021, 07:50 PM | #33 | |
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Still sounded different in the different modes based on ASD and the amount of pops the ecu allowed, but the overall tone was consistent. I'll be doing the same when my CS arrives |
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01-31-2021, 08:05 PM | #34 | |
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02-04-2021, 02:17 PM | #35 | |
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02-05-2021, 05:03 AM | #36 | |
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What struck me with the M2C was that with the valves open and unplugged, each mode sounded quite different and it was purely a function of ASD and ECU popcorn. Sport was my default mode. |
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02-05-2021, 06:53 AM | #37 |
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So far, my opinion, after 50 miles of driving with them unplugged, is that I do not hear a significant increase in volume or change in the tone of sound other than the increased turbo noise. I have not played around with Effiicient vs Sport vs Spor+ enough to discern the differences between the 3 modes yet. Sport+ vs Sport+, however, is not appreciably louder or much different, IMHO. I will drive some more this weekend and see if I can't add any more feedback.
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02-14-2021, 07:41 PM | #38 |
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As I re-plugged the exhaust valves in preparation for trading my M2C over to the dealer next week for my CS delivery, it struck me what clear differences were made by leaving the exhaust valves open:
- no absolute volume increase in sport plus - more drone whilst cruising in sport and sport plus - dct manual downshifts sound far more aggressive and gruff with the rev matching Will wait to see how the exhaust sounds on the CS, but for me unplugging the valves on the Comp is a must mod if keeping the exhaust otherwise stock. |
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02-16-2021, 07:16 PM | #39 |
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I thought the same thing when I got mine, I have about 1,900 miles on her now and I brought this up to the service tech when I brought it in for the 1,200 mile break-in service. They confirmed they were working so unfortunately that's just the way these cars are and it doesn't get much louder.. the only difference I notice is a little more "burbling" when you let off after revving it. Thinking about doing a mid-pipe for a little more volume.
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02-16-2021, 07:22 PM | #40 | |
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02-17-2021, 12:34 AM | #41 |
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If others hadn’t already reported, the CS does *not* have ASD (fake noise) enabled by default according to BimmerLink, at least mine didn’t.
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02-17-2021, 12:49 AM | #42 | |
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Also, some other mentioned "YouTubers" complaining about the sound. I don't really respect their opinion on anything but I do enjoy the footage. You don't hear respected car reviewers complaining about the sound. That Adam Sandler looking guy in the Supra M2cs review described it a "hellacious sound". Henry described it in this photo in his own special way. |
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Hedoniste3772.00 MadBimmeRad7107.00 |
02-17-2021, 01:19 AM | #43 |
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I keep looking for the exhaust volume switch. Maybe it’s what I’m used to in my previous cars, volume wise at least.
I don’t miss the ping pong ball bouncing in the muffler I was accustomed to in my old 30Jahre M3C. |
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02-17-2021, 08:53 AM | #44 | |
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I would love for you to be right, but you are the first person to make this claim. How did you confirm this?
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