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Technical Topics B58 6-Cylinder Turbo Engine / Drivetrain / Exhaust Modifications 2021 M340i no pops/burbles

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      11-20-2020, 09:46 AM   #155
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Originally Posted by Casone238 View Post
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Originally Posted by Enigma735 View Post
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Originally Posted by Casone238 View Post
It was extra $2000 added to my build with the discounts and so on it translated to an extra 17$ a month on my lease
Interesting. Does that include the M Sport Tips? Because it looks like you can get the actual exhaust part from getbmwparts for $1545 right now https://www.getbmwparts.com/oem-part...b3J5IFBhZ2U%3D. I assume to have it dealer installed would make up the difference but wondering how difficult the install is otherwise.
Yeah when I was ordering my car I saw to buy it was cheaper but I'm only paying 41% of about 1800. Plus when it comes time to lease returns I didn't want to have to swap it back to the stock exhaust.

I attached the photo so you can see it's the same exhaust tips. It's possible that the actual exhaust tips are different from the stock because the tips that is visible is basically a cover over the real tips
You don't have to switch it back if you ordered it with the MPE. That's part of your build . I don't think any authentic BMW parts require you to change the car on return.
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      11-20-2020, 04:46 PM   #156
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You don't have to switch it back if you ordered it with the MPE. That's part of your build . I don't think any authentic BMW parts require you to change the car on return.
Right if you order the car with MPE parts your good but if you mod the car afterwards then I believe you have to return everything to the original build. I know some dealers don't really care if the cpo for that car has a high demand
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      11-20-2020, 05:25 PM   #157
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Originally Posted by Casone238 View Post
Yeah when I was ordering my car I saw to buy it was cheaper but I'm only paying 41% of about 1800. Plus when it comes time to lease returns I didn't want to have to swap it back to the stock exhaust.

I attached the photo so you can see it's the same exhaust tips. It's possible that the actual exhaust tips are different from the stock because the tips that is visible is basically a cover over the real tips
Yeah I was thinking about this. I could have it slapped on after locally and not have it rolled in to the payments, and then residualize the cost by reselling it pre-lease turn in after swapping stock back on. From what I read there shouldn’t be any cuts needed or if so it’s one and can be clamped pretty easily. I may buy the car out this go round if I like it enough and want to get out of the leasing world so still assessing my options. I also kind of want to hear how bad it is first without it to see if it’s worth it for my own preference. I can just visualize my mother in law sitting in the back bitching about how loud the MPE is lol.
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      11-22-2020, 08:24 PM   #158
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What's up guys i'm new on the forum. I currently have a 2021 M340 on order. By now we all have read that the 21's have the Mild hybrid system and are quieter than the 20's. does anyone have a video of a 21 with MPE that stock? i'm debating if i should add it at the port. here's a video of a 21 with the stock exhaust i revved it in sport cold start then switched to eco.


https://share.icloud.com/photos/0dwB...568g#Greenwich
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      11-23-2020, 12:22 AM   #159
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What's up guys i'm new on the forum. I currently have a 2021 M340 on order. By now we all have read that the 21's have the Mild hybrid system and are quieter than the 20's. does anyone have a video of a 21 with MPE that stock? i'm debating if i should add it at the port. here's a video of a 21 with the stock exhaust i revved it in sport cold start then switched to eco.


https://share.icloud.com/photos/0dwB...568g#Greenwich
You can still hear some and I like it. It's not over done. Maybe I'm just old but that sounds good to me
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      11-23-2020, 12:33 AM   #160
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I am definitely old compared to most of you guys, but using mine for a daily driver that stock note should be fine. I don't want a weekend ripper driving it every day. I already have one of those and the wife is afraid I am waking them up (our neighbors) early enough on weekends with that one on the way to CnC
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      11-23-2020, 03:31 AM   #161
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i work at bmw so after driving it a bunch of times i can confirm that it does still burble around 3-5k. Does not crack at all. Example i drove the X3 M40 When you turn it on it automatically pops and when you left off the gas around 6k rpm the crack is super loud.
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      11-23-2020, 07:51 AM   #162
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Originally Posted by jct_m340 View Post
i work at bmw so after driving it a bunch of times i can confirm that it does still burble around 3-5k. Does not crack at all. Example i drove the X3 M40 When you turn it on it automatically pops and when you left off the gas around 6k rpm the crack is super loud.
See that works for me, so apparently they are making this car for old guys like me now. If I used it for a weekend car I would absolutely straight pipe the thing with a new down pipe etc, but using it daily I don't want it to be too crazy.

Will let you know when I get mine my thoughts, but I am coming from a 330I so my guess is it will be fine.
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      11-23-2020, 08:45 AM   #163
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Are you trying the pops and burbles at stand still or while driving?
I got 02.2020 m340 and when im reving it at P no pop no burble ... I was like well my car is broken. Then I went for a drive second gear floor it and release the throttle the car starts right away to pop and bang which is super cool. But at standstill no pops at all. Or maybe they are so quite that I cannot heard them.
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      11-23-2020, 01:48 PM   #164
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Quote:
Originally Posted by bimmerMytlas View Post
Are you trying the pops and burbles at stand still or while driving?
I got 02.2020 m340 and when im reving it at P no pop no burble ... I was like well my car is broken. Then I went for a drive second gear floor it and release the throttle the car starts right away to pop and bang which is super cool. But at standstill no pops at all. Or maybe they are so quite that I cannot heard them.
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Originally Posted by bimmerMytlas View Post
Are you trying the pops and burbles at stand still or while driving?
I got 02.2020 m340 and when im reving it at P no pop no burble ... I was like well my car is broken. Then I went for a drive second gear floor it and release the throttle the car starts right away to pop and bang which is super cool. But at standstill no pops at all. Or maybe they are so quite that I cannot heard them.
There aren't many burbles in park. usually get them when driving and when driving with windows down you can hear them. With the mild hybrid system the m340 i believe is significantly quieter
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      11-24-2020, 07:35 AM   #165
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I work for BMW and theres a night and day difference from a 2020 to a 2021 (I own a 2021).

There is almost no pops and burbles at all in the 2021. The 2020s that I drove almost had too many if thats possible,It was happening all the time. Sounded great though.

IF anything BMW should have done a comfort mode with no pops and burbles and sport mode made it sound like the 2020 sounded. They seem to never get it right w these types of things though.

I wish my car had some more noise, a little bit would be nice. Instead of almost none.
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      11-26-2020, 08:54 AM   #166
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Can also confirm the 2021 has almost no cracks and pops. Had a 2021 loaner and it only burbles slightly in sport plus when lifting off throttle. No pops or cracks when down shifting.

Got back in my 2020 and it cracks and pops like crazy on throttle lift/down shift and up shift.
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      11-26-2020, 01:27 PM   #167
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The difference is drastic between the 2020 and 2021 models. I tested both within 5 minutes of one another. Just revving at low RPMs when parked still gives the 2021 a decent sound but while driving the 2020 is definitely much more engaging without being obnoxious. I am ordering a 2021 m340i because I could not get my hands on a 2020 model with the right options. I will be doing something to the stock exhaust as it is too disappointing as is. Possibly MPE, DINAN or other aftermarket solution. I find that at low (less than 2500RPMS) the tone of the 2021 is not bad but once you get any higher in the revs it is nothing more than a stock Corolla. It all depends on what you are looking for in the car but if you are going to pay more for an m340i instead of a 330 than you want to hear the engine and improve your driving experience (in my opinion). Whatever changes I would make however would need to assure that in comfort mode it will not be obnoxious and cause you to be afraid to cold start your car in the morning.
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      11-28-2020, 05:11 AM   #168
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Quote:
Originally Posted by FROUV View Post
The difference is drastic between the 2020 and 2021 models. I tested both within 5 minutes of one another. Just revving at low RPMs when parked still gives the 2021 a decent sound but while driving the 2020 is definitely much more engaging without being obnoxious. I am ordering a 2021 m340i because I could not get my hands on a 2020 model with the right options. I will be doing something to the stock exhaust as it is too disappointing as is. Possibly MPE, DINAN or other aftermarket solution. I find that at low (less than 2500RPMS) the tone of the 2021 is not bad but once you get any higher in the revs it is nothing more than a stock Corolla. It all depends on what you are looking for in the car but if you are going to pay more for an m340i instead of a 330 than you want to hear the engine and improve your driving experience (in my opinion). Whatever changes I would make however would need to assure that in comfort mode it will not be obnoxious and cause you to be afraid to cold start your car in the morning.
Quote:
Originally Posted by FROUV View Post
The difference is drastic between the 2020 and 2021 models. I tested both within 5 minutes of one another. Just revving at low RPMs when parked still gives the 2021 a decent sound but while driving the 2020 is definitely much more engaging without being obnoxious. I am ordering a 2021 m340i because I could not get my hands on a 2020 model with the right options. I will be doing something to the stock exhaust as it is too disappointing as is. Possibly MPE, DINAN or other aftermarket solution. I find that at low (less than 2500RPMS) the tone of the 2021 is not bad but once you get any higher in the revs it is nothing more than a stock Corolla. It all depends on what you are looking for in the car but if you are going to pay more for an m340i instead of a 330 than you want to hear the engine and improve your driving experience (in my opinion). Whatever changes I would make however would need to assure that in comfort mode it will not be obnoxious and cause you to be afraid to cold start your car in the morning.


I agree but at the price point the M340 is a beast! let me know what you do to yours my build is supposed to be here by the end of the year. What options did you go with?
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      11-28-2020, 10:56 AM   #169
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Quote:
Originally Posted by FROUV View Post
The difference is drastic between the 2020 and 2021 models. I tested both within 5 minutes of one another. Just revving at low RPMs when parked still gives the 2021 a decent sound but while driving the 2020 is definitely much more engaging without being obnoxious. I am ordering a 2021 m340i because I could not get my hands on a 2020 model with the right options. I will be doing something to the stock exhaust as it is too disappointing as is. Possibly MPE, DINAN or other aftermarket solution. I find that at low (less than 2500RPMS) the tone of the 2021 is not bad but once you get any higher in the revs it is nothing more than a stock Corolla. It all depends on what you are looking for in the car but if you are going to pay more for an m340i instead of a 330 than you want to hear the engine and improve your driving experience (in my opinion). Whatever changes I would make however would need to assure that in comfort mode it will not be obnoxious and cause you to be afraid to cold start your car in the morning.
I have an M340i build coming in myself and I am wondering... with MPE, is the car obnoxious with a cold start in the morning as you say? This will be my daily driver but I want it to sound good without waking the neighbors (unless I want to wake the neighbors, that is &#128518.
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      11-29-2020, 03:54 PM   #170
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I agree but at the price point the M340 is a beast! let me know what you do to yours my build is supposed to be here by the end of the year. What options did you go with?
Mine will only be arriving in February. I have not made a decision yet on the MPE. Still looking at other options. Worst case will be MPE. I'm debating waiting to hear it as is before making any changes (wishful thinking).
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      11-29-2020, 03:58 PM   #171
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Quote:
Originally Posted by Rossodio View Post
I have an M340i build coming in myself and I am wondering... with MPE, is the car obnoxious with a cold start in the morning as you say? This will be my daily driver but I want it to sound good without waking the neighbors (unless I want to wake the neighbors, that is &#128518.
I hope to be in a position to try a 2021 with MPE shortly so I can see the impact.
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      11-29-2020, 07:26 PM   #172
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Quote:
Originally Posted by FROUV View Post
Quote:
Originally Posted by Rossodio View Post
I have an M340i build coming in myself and I am wondering... with MPE, is the car obnoxious with a cold start in the morning as you say? This will be my daily driver but I want it to sound good without waking the neighbors (unless I want to wake the neighbors, that is &#128518.
I hope to be in a position to try a 2021 with MPE shortly so I can see the impact.
I have a 2021 with MPE and it's not obnoxious at all (for me) - cold start is louder but nothing bad / it's all subjective honestly.
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      11-30-2020, 07:31 AM   #173
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So what did you do for it? Changed the cams and air filter? Nothing done to mufflers/resonators?
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      12-01-2020, 03:52 PM   #174
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In anticipation of receiving my 2021 M340i, I am trying to analyze potential aftermarket exhaust systems. I have been looking at the BMW MPE, Dinan Axle-Back, AWE Touring as well as Innotech Performance Exhaust. Apart from the MPE does anyone have any information on these other options with a 2021 model? I would prefer to stay away from the AWE given that it removes the valves which are key to keeping your neighbours happy!
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      12-13-2020, 06:21 PM   #175
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A video popped up of the MPE exhaust on a 2021 M340i:

https://youtu.be/LSErTpdR4n4

Last edited by Estoril_AJ; 12-13-2020 at 07:52 PM..
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      12-14-2020, 10:34 AM   #176
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Originally Posted by Estoril_AJ View Post
A video popped up of the MPE exhaust on a 2021 M340i:

https://youtu.be/LSErTpdR4n4
Sounds good! has a deeper tone to it
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