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BMW 5-Series (G30) Forum 2017+ BMW 5 Series (G30) General Discussions Flaps open on exhaust question

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      11-13-2019, 07:18 PM   #23
Muslenutz
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Quote:
Originally Posted by AddyDaddy View Post
From what I know,
2018/2019 are same, changes 2020. Just see if your fuse box looks like the pic
If you have a red 7.5 on the left pull it. Worst case you lose abs or a/c
No go. Didn't work. Flap won't open. Have you done this on a 540, not 550?
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      11-13-2019, 08:09 PM   #24
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Quote:
Originally Posted by Muslenutz View Post
Quote:
Originally Posted by AddyDaddy View Post
From what I know,
2018/2019 are same, changes 2020. Just see if your fuse box looks like the pic
If you have a red 7.5 on the left pull it. Worst case you lose abs or a/c
No go. Didn't work. Flap won't open. Have you done this on a 540, not 550?
No just my M550. Your flap isn't open even on cold start?
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      11-13-2019, 09:10 PM   #25
Muslenutz
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Quote:
Originally Posted by AddyDaddy View Post
Quote:
Originally Posted by Muslenutz View Post
Quote:
Originally Posted by AddyDaddy View Post
From what I know,
2018/2019 are same, changes 2020. Just see if your fuse box looks like the pic
If you have a red 7.5 on the left pull it. Worst case you lose abs or a/c
No go. Didn't work. Flap won't open. Have you done this on a 540, not 550?
No just my M550. Your flap isn't open even on cold start?
Cold. Warm. Hot. Any mode. No clue. Can't I just hit the gas, I imagine it will open. Then when open have someone pull the fuse. The only other way I would do it is the pull the connector out, tape it and zip tie it.

Is the exhaust going to be that much different?
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      11-14-2019, 02:52 PM   #26
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Quote:
Originally Posted by Muslenutz View Post
Is the exhaust going to be that much different?
That's the thing.. it isn't. There's virtually no sound difference. If you want a more sporty exhaust sound you'll have to look at other systems unfortunately.
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      11-14-2019, 07:34 PM   #27
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Pulling the fuse won't work on a 540. Just remove the clip and use some metal safety wire to keep the flap open. A zip tie will melt so I wouldn't suggest that.
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      02-19-2023, 07:00 PM   #28
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FYI my new 2023 540i I used bummer link to open the flap, and did same thing, just pulled the 7.5 fuse and flaps are open until I put fuse back in. 3 min total time I did tonight. Same fuse config as my M550. Just revived old thread!!
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      02-19-2023, 07:11 PM   #29
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Just did my younger brothers 2022 M750i xdrive a min ago. Same fuse config as well.
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      02-19-2023, 11:25 PM   #30
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Quote:
Originally Posted by AddyDaddy View Post
FYI my new 2023 540i I used bummer link to open the flap, and did same thing, just pulled the 7.5 fuse and flaps are open until I put fuse back in. 3 min total time I did tonight. Same fuse config as my M550. Just revived old thread!!
Same with my 2019 540i.
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      02-21-2023, 03:55 PM   #31
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I also used bimmerlink to open the flap and pull the fuse. It's been this way for about a year now.
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      06-28-2023, 02:55 PM   #32
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Quote:
Originally Posted by lanlilan View Post
I also used bimmerlink to open the flap and pull the fuse. It's been this way for about a year now.
Yup, I just did that on my 2023 M550, and it works. Use the app to open the flaps, and pulling the fuse will not let them close. I just realized this old thread and brought it back to life. Also, I deleted the resonators with the Dinan mid pipes kit, and it sounds gnarly just revving it in the driveway. I just had major surgery and can't drive for a couple of weeks. I am chomping at the bit to release the beast on the street.

Last edited by NV GUNS; 06-28-2023 at 03:29 PM..
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      06-28-2023, 08:25 PM   #33
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Quote:
Originally Posted by lanlilan View Post
I also used bimmerlink to open the flap and pull the fuse.
Doesn't that app keep the valves open, eliminating the need to pull the fuse? Just curious. And are there any drawbacks from leaving valves open all the time, like drone inside the cabin? Thx.
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      06-28-2023, 08:38 PM   #34
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Quote:
Originally Posted by Muslenutz View Post
Sounds more complicated than I expected. I'm glad you posted though because I'm assuming most people posting don't have a 540. What would happen if I had someone give it some throttle and while it's open, I pull the fuse?
it's always open in sport plus
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      06-28-2023, 09:10 PM   #35
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Do you have MHD? It gives you the option to leave the flap open.
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      06-29-2023, 06:36 AM   #36
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Quote:
Originally Posted by JCtx View Post
Doesn't that app keep the valves open, eliminating the need to pull the fuse? Just curious. And are there any drawbacks from leaving valves open all the time, like drone inside the cabin? Thx.
You could lose some efficiency…. Burn some more dino juice. Payback is the aural enjoyment when you fire up the beast and drive it around.
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      06-30-2023, 08:01 AM   #37
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Quote:
Originally Posted by JCtx View Post
Doesn't that app keep the valves open, eliminating the need to pull the fuse? Just curious. And are there any drawbacks from leaving valves open all the time, like drone inside the cabin? Thx.
The app does not keep them open all the time. The app only can keep them open when it is connected. So that is why you use the app to open them then pull the fuse to keep them open. No drone because in other driving modes, the flaps will open even in econ mode.
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      07-05-2023, 10:11 AM   #38
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Quote:
Originally Posted by Muslenutz View Post
I have a 2018 540 and I want to know who has confirmed this to work on a 2018. I hear there are 3 ways to do it but it isn't always capable Which have you done and do they stay open all of the time.

1. Bimmerlink App
2. Remove fuse
3. Unplug cable
I used Bimmerlink then unpluged the cable and useda ziptie was how I first did it until MHD added an option that now has an exhaust force open/close option which is great!
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