[pcai]

Originally Posted by Fantastic 5

I brought my 21 LCI in for a repair of the roof rails that were coming up at the rear (see my other post) and my service advisor told me that I am due for the tank vent recall and update. I asked him if it affects the exhaust sound, and he said unequivocally that it does. He said that it definitely does mute the exhaust sound.

As such, I told him to make sure he puts a standing order on my file that it never gets done.

pretty sure NA LCI is already loaded with different/less aggressive burble tune from factory. So, don't think the recall will do much to your car. If you want a reference, check the video posted by Can-am (scroll up) of the fly-bys. Does your M5 have those really loud pops during aggressive high RPM downshifts?

[CharlieBronsonF90]

Originally Posted by pcai

Can any North American 2021 LCI owners confirm that you can get these stupid loud pops during aggressive downshifts starting from 32 seconds in the video? Then we will know for sure if the NA LCIs (and hence the post-recall software) have the same burble tune as before LCI.

I can confirm. Bought my new 2021 in LA in February. Loud pops around 2800-3200 when I let off the throttle. Extremely loud cracks and pops if I go above 4K rpm and let off.

[The5rivers]

Originally Posted by CharlieBronsonF90

I can confirm. Bought my new 2021 in LA in February. Loud pops around 2800-3200 when I let off the throttle. Extremely loud cracks and pops if I go above 4K rpm and let off.

Great to hear. I hope my custom order isn’t muted from the factory!

[pcai]

Originally Posted by CharlieBronsonF90

I can confirm. Bought my new 2021 in LA in February. Loud pops around 2800-3200 when I let off the throttle. Extremely loud cracks and pops if I go above 4K rpm and let off.

Did you get the recall done yet? Or is it even required on your car?

[Fantastic 5]

I'm so confused right now. Some people and my service advisor say it mutes out the exhaust and the pops/bangs and some say it doesn't. Some even say it's even more aggressive after the update.

It's a zero sum decision to have it done because there's no going back if it has a negative effect.

We need 2 owners. One with the update and one without to make a comparative video. I have a 21 LCI without the update and I took delivery before the update. My brother has a 20 with no update. We need to find someone who has a car after the update.

[Dblazer31]

Originally Posted by pcai

Can any North American 2021 LCI owners confirm that you can get these stupid loud pops during aggressive downshifts starting from 32 seconds in the video? Then we will know for sure if the NA LCIs (and hence the post-recall software) have the same burble tune as before LCI.

I am in Texas and have a 2021 LCI. I can confirm that before the update B160420 for Tank Ventilation, I had pops very much like what is heard in the video. After the update with similar driving during the downshift the sound is 2 very reserved pops and that’s it.

[DocWeatherington]

So..... 2019 M5 Comp (Pre LCI)-- Serviced in VA, but registered in MI so exempt from inspections or emission testing.


I had this service done a little over a week ago. I can report no noticeable change in the exhaust.

No real pops and bangs in Eff/Sport like normal.. it does make some muted noises, but sport+ is still sport plus. Also, parked in sport+ or any mode, you can rev the shit out to redline like before, and the noise profile is the same- once the car is up to temp.

I will say right after service, I had the feeling it was more muted, but after a week of driving, it's like normal-- The speed-sensitive volume gets set to default, so I wonder if to a degree if the fake noise is also modified based upon this setting.

The system might have to do a bit of relearning as like everyone else states, you lose all your settings. So, it might reset the learning.

I will also note they did a general update to the idrive, but no new features here.

Fantastic 5
mjr24

[OttoM5]

‘21 comp, Nov. build, Jan. Delivery. Mine sounds like the video posted by Can Am on downshifts in Sport+ mode.

[CharlieBronsonF90]

Originally Posted by pcai

Did you get the recall done yet? Or is it even required on your car?

I haven't received any notice for a recall, so I'm assuming it's not needed. I bought the car the second week of February if that helps.

[Jamesmick]

I've got a 2018 non-comp and haven't had the recall done yet. I'm in San Diego area and happy to offer up mine for a local comparison of sound.

[pcai]

Originally Posted by DocWeatherington

So..... 2019 M5 Comp (Pre LCI)-- Serviced in VA, but registered in MI so exempt from inspections or emission testing.


I had this service done a little over a week ago. I can report no noticeable change in the exhaust.

No real pops and bangs in Eff/Sport like normal.. it does make some muted noises, but sport+ is still sport plus. Also, parked in sport+ or any mode, you can rev the shit out to redline like before, and the noise profile is the same- once the car is up to temp.

I will say right after service, I had the feeling it was more muted, but after a week of driving, it's like normal-- The speed-sensitive volume gets set to default, so I wonder if to a degree if the fake noise is also modified based upon this setting.

The system might have to do a bit of relearning as like everyone else states, you lose all your settings. So, it might reset the learning.

I will also note they did a general update to the idrive, but no new features here.

Fantastic 5
mjr24

There has always been a neutral rev limiter of about 5K RPM. You could never rev it out to redline. Give it a try, the car has a soft limiter at 5K S+.

[pcai]

Originally Posted by Jamesmick

I've got a 2018 non-comp and haven't had the recall done yet. I'm in San Diego area and happy to offer up mine for a local comparison of sound.

Yours as of now would have the full sound experience-full original burble tune and no filters. If you ever plan on getting the recall done, just see if any of the super loud pops (ie during high rpm downshifts or letting off at 4-5K rpm) disappear.

[mjr24]

Honestly, after driving it for a few days....it's definitely gotten louder. I really think while it's relearning that it's not going to pop as much.

Obviously some of us probably don't rev it much. I almost wonder if those having this issue bought a pre owned one where the owner revved it for awhile so the computer learned that....and now it's not popping after the update because the new owner just doesn't drive the car that way to open that up while the computer is relearning.

[TimmyBHGM5]

Originally Posted by mjr24

Honestly, after driving it for a few days....it's definitely gotten louder. I really think while it's relearning that it's not going to pop as much.

Obviously some of us probably don't rev it much. I almost wonder if those having this issue bought a pre owned one where the owner revved it for awhile so the computer learned that....and now it's not popping after the update because the new owner just doesn't drive the car that way to open that up while the computer is relearning.

Originally Posted by mjr24

Honestly, after driving it for a few days....it's definitely gotten louder. I really think while it's relearning that it's not going to pop as much.

Obviously some of us probably don't rev it much. I almost wonder if those having this issue bought a pre owned one where the owner revved it for awhile so the computer learned that....and now it's not popping after the update because the new owner just doesn't drive the car that way to open that up while the computer is relearning.

What needs to be done for it to learn to pop again?

[mjr24]

Originally Posted by TimmyBHGM5

What needs to be done for it to learn to pop again?

I normally put it in S3 mode and rev it higher in second and third.....probably many times for the first week or two.

[Mr.D]

I did the recall a couple of months back and definitely DO NOT notice a difference in the backfire and engine pops - IE it's just as loud as before.

[Jamesmick]

Originally Posted by pcai

Yours as of now would have the full sound experience-full original burble tune and no filters. If you ever plan on getting the recall done, just see if any of the super loud pops (ie during high rpm downshifts or letting off at 4-5K rpm) disappear.

Will do. To be honest, I've never really noticed or gone out of my way to notice the pops and burbles so I might not be the best independent judge of this. But happy to put mine up against another local M5 who has had the service done for comparison purposes.

[Maverik259]

Car is in for recall and some warranty work on some interior pieces but had to run in this afternoon to "replicate" a squeak complaint I had and can confirm the software update didn't change the exhaust. Still sounded the same if not better than before. Still has the pops as much as I don't think they belong on a BMW V8.

[mjr24]

I still can't tell after a few weeks of driving. It's definitely louder than when I first got it back.....but I feel it's missing some of what it was.

Again, software updates per se have nothing to do with this. I had my car in several times since this thread was started and they never did anything related to that. I do believe the fuel tank vent "recall" is what changes things. When or why they suddenly do that update (or why they don't do it right away) is the question.

This fuel recall has been around for like, what, a year? So why did I not get it until the 8th time at the dealer with this car in that year?

[Jocko78]

God I hope I don't loose the sounds, my values are open 90% of the time. 2020 here and next service in about 3k miles. I would have to go full tune otherwise.

[BrntRubber]

Originally Posted by Can-am

Sound before recall :

Sound after recall - I find it to be louder and more pops :

What colour is your car? Looks purdy

[Alberta]

Originally Posted by BrntRubber

What colour is your car? Looks purdy

Individual Frozen Arctic Grey