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BMW 5-Series (G30) Forum Engine, Exhaust, Drivetrain, Tuning Modifications M550 exhaust flaps open = much better sound

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      07-28-2018, 10:14 PM   #23
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Quote:
Originally Posted by forza1976 View Post
Did this on my previous F82 and while that was fun, the cold start of the F82 with the flaps open all the time was obnoxious. And this sounds better.

Ready for it.....


[COLOR="Red"]Pull fuse F203![/COLOR]
1) Turn car on, put in sport. *Ensure the flaps are open
2) Go into trunk, pull fuse F203 (while car is still on)
3) Verify flaps are still open
4) Close trunk
5) Enjoy

Exhaust Flap wiring diagram:
https://www.newtis.info/tisv2/a/en/g...use/1VnYS9CGy7
So, the flaps are fully open in Sport, and not Sport+?
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      07-29-2018, 12:50 PM   #24
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Quote:
Originally Posted by Who's on first View Post
So, the flaps are fully open in Sport, and not Sport+?
Both
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      07-29-2018, 12:57 PM   #25
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forza1976's mod is highly recommended.

The unbridled sound is prefect and better represents the beast lurking in the M550. Compared to the stock piped in artificial sound and the half capped flap, it has a nice growl without being too aggressive.
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      08-04-2018, 11:39 PM   #26
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So my flaps are half open in sports and sports plus.. what gives?
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      08-05-2018, 09:37 AM   #27
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Quote:
Originally Posted by /// M sa View Post
So my flaps are half open in sports and sports plus.. what gives?
No, but this keeps them open in all modes. Basically Sport exhaust in all drive settings.
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      10-06-2018, 09:17 AM   #28
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Quote:
Originally Posted by ksoze View Post
No, but this keeps them open in all modes. Basically Sport exhaust in all drive settings.
Where is the F203 fuse? I've looked all around the car and can't find it. Pics?
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      10-06-2018, 01:47 PM   #29
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Quote:
Originally Posted by Mile High M Power View Post
Where is the F203 fuse? I've looked all around the car and can't find it. Pics?
In the trunk. Right side wall, remove felt cover. Use map in post above to locate the right fuse.
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      10-10-2018, 08:12 PM   #30
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Good day all. Great sound improvement with flaps open. I have followed instructions in first post thanks.

Problem I have is every month or so it starts to rattle as the zip ties come loose. I've had to re-zip tie so many times I'm an expert at it but for some reason one or the other always comes loose and makes the most ANNOYING and embarrassing rattling noise.

I'd like to try the method of pulling the fuse but for some reason I cannot get these metal clips back into place as they were when stock. The 2 pieces/grooves that the clip connects simply don't line up for me to squeeze the clip and put it back into place. They are at 90 degree angle to each other. Impossible to put clip in unless the grooves are parallel.

Doesn't help that I don't have a picture of how it looked like stock maybe I'm putting the clip back in the wrong orientation? Anyone have a pic?

Any advice would be greatly appreciated. Would love to put clips back as stock and go with the fuse method instead. Thank you.
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      10-10-2018, 08:38 PM   #31
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use a metal strap like a pipe clamp, plastic definitely isn't perfect for this.

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      11-02-2018, 12:59 AM   #32
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Quote:
Originally Posted by forza1976 View Post
Did this on my previous F82 and while that was fun, the cold start of the F82 with the flaps open all the time was obnoxious. And this sounds better.

Ready for it.....


[COLOR="Red"]Pull fuse F203![/COLOR]
1) Turn car on, put in sport. *Ensure the flaps are open
2) Go into trunk, pull fuse F203 (while car is still on)
3) Verify flaps are still open
4) Close trunk
5) Enjoy

Exhaust Flap wiring diagram:
https://www.newtis.info/tisv2/a/en/g...use/1VnYS9CGy7
This is great advice thank you. Had dealer put clips back in then did this fuse trick way easier and the annoying rattle is GONE! THANK YOU!
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      11-02-2018, 10:42 AM   #33
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Quote:
Originally Posted by RASHID007 View Post
This is great advice thank you. Had dealer put clips back in then did this fuse trick way easier and the annoying rattle is GONE! THANK YOU!
Sweet, glad this worked out for ya.
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      11-20-2018, 08:11 AM   #34
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Lol, forza Put it so simply for all of you guys. You're doing so much work for nothing. Just pull the fuse. That's it nothing else. Flaps open 100% all the time
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      11-26-2018, 05:35 PM   #35
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This is such an awesome jailbreak. I plan on trying both ways lol
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      12-21-2018, 09:04 PM   #36
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Quote:
Originally Posted by forza1976 View Post
Did this on my previous F82 and while that was fun, the cold start of the F82 with the flaps open all the time was obnoxious. And this sounds better.

Ready for it.....


[COLOR="Red"]Pull fuse F203![/COLOR]
1) Turn car on, put in sport. *Ensure the flaps are open
2) Go into trunk, pull fuse F203 (while car is still on)
3) Verify flaps are still open
4) Close trunk
5) Enjoy

Exhaust Flap wiring diagram:
https://www.newtis.info/tisv2/a/en/g...use/1VnYS9CGy7
Does this work on a g30 M550 as well? Thanks
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      12-21-2018, 10:57 PM   #37
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Quote:
Originally Posted by LetsrollM550 View Post
Does this work on a g30 M550 as well? Thanks
Yes.
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      12-22-2018, 11:51 PM   #38
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Quote:
Originally Posted by ksoze View Post
Quote:
Originally Posted by LetsrollM550 View Post
Does this work on a g30 M550 as well? Thanks
Yes.
Thanks works great!!
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      12-23-2018, 08:53 AM   #39
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Quote:
Originally Posted by LetsrollM550 View Post
Thanks works great!!
It is just enough growl to be heard, but not enough to attract unwanted attention or drone at cruising speed.
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      12-29-2018, 08:12 PM   #40
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Quote:
Originally Posted by forza1976 View Post
Did this on my previous F82 and while that was fun, the cold start of the F82 with the flaps open all the time was obnoxious. And this sounds better.

Ready for it.....


Pull fuse F203!
1) Turn car on, put in sport. *Ensure the flaps are open
2) Go into trunk, pull fuse F203 (while car is still on)
3) Verify flaps are still open
4) Close trunk
5) Enjoy

Exhaust Flap wiring diagram:
https://www.newtis.info/tisv2/a/en/g...use/1VnYS9CGy7
My first full day with my new M550i in this is one of the first few mods (ok several) I completed. Thank you brother!!!
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      04-27-2019, 06:10 PM   #41
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M550 Fuse Pull

I pulled Fuse #203, to be honest I haven't noticed a big difference, I can hear a deeper tone at idle or low revs, but in daily driving not much louder than stock at all. Is this the same for anyone else who's tried this?
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      04-27-2019, 06:13 PM   #42
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Quote:
Originally Posted by BardG View Post
I pulled Fuse #203, to be honest I haven't noticed a big difference, I can hear a deeper tone at idle or low revs, but in daily driving not much louder than stock at all. Is this the same for anyone else who's tried this?
Unless you pulled the fuse while in Sport Mode, it won't take. If you had done it, you would notice. Make sure the car is set to Sport mode, then pull the fuse.
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      04-28-2019, 12:26 PM   #43
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Quote:
Originally Posted by ksoze View Post
Quote:
Originally Posted by BardG View Post
I pulled Fuse #203, to be honest I haven't noticed a big difference, I can hear a deeper tone at idle or low revs, but in daily driving not much louder than stock at all. Is this the same for anyone else who's tried this?
Unless you pulled the fuse while in Sport Mode, it won't take. If you had done it, you would notice. Make sure the car is set to Sport mode, then pull the fuse.
Thank you. Two questions:

1. How do I know if the flaps are fully open? (Just by the sound?)

2. Should I do this on a fully cold start?
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      04-28-2019, 01:29 PM   #44
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Quote:
Originally Posted by BardG View Post
Thank you. Two questions:

1. How do I know if the flaps are fully open? (Just by the sound?)

2. Should I do this on a fully cold start?
1 . After the cold catalytic warm up on start up, see if the exhaust is coming from both sides. The sound will literally and figuratively be twice as loud when driving or under throttle, IN ANY DRIVING MODE.

2. The car has to be put in Sport Mode, then while still running, get out of the car and pull the fuse.
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