Exhaust

redbullfan · 04-02-2021, 11:15 AM

Quote:

Originally Posted by Abhi_b

Got Bimmerlink opened the valve removed the fuse 203 and guess what absolute waste of time, money and effort �� It works yes flap stayed open but barely any noticeable difference in sound forget pops or bangs on the contrary the nice blip blip which I used to get on launch when gears changed is gone the fuse is going back in tomorrow. Please save yourself the effort if like mine you own the X5 40i M sport My2021. Cheers

Quote:

Originally Posted by LexxM3

Contrary, many others, including myself, have noted significant improvement in exhaust sound with flap permanently open (but it is, of course, not even close to a full exhaust overhaul, it would be silly to expect otherwise). If it didn't work as expected for you, it would be more prudent for you to question and investigate that rather than making an arrogant recommendation based on your rather limited experience. It's possible that there are changes in MY2021 or in recent software that have an effect. Or the comparative test environment is unlike most others (it may be a difference in engine or environment temperatures, or I'll note that sound improvement is more pronounced when starting and driving in Sport+ mode). A little humility is in order ...

I can vouch for Abhi_b on this, It doesn't sound louder for MY2021 cars. MY2021 is in fact quieter then previous model years so if you have a MY2021 don't waste your time or money doing this.

DCC · 04-02-2021, 11:19 AM

My 2020 is noticeably lounder with the flap open.
But you might be right about 2021 cars. They tinkered around with these cars so much there is no telling what changed.
I actually don't do it so much for the sound but more for seeing exhaust coming out both tips vs one side only LOL

redbullfan · 04-02-2021, 11:24 AM

Quote:

Originally Posted by DCC

My 2020 is noticeably lounder with the flap open.
But you might be right about 2021 cars. They tinkered around with these cars so much there is no telling what changed.
I actually don't do it so much for the sound but more for seeing exhaust coming out both tips vs one side only LOL

It has a lot to do with the BS Mild hybrid system

LexxM3 · 04-02-2021, 01:24 PM

Quote:

Originally Posted by redbullfan

Quote:

Originally Posted by DCC

My 2020 is noticeably lounder with the flap open.
But you might be right about 2021 cars. They tinkered around with these cars so much there is no telling what changed.
I actually don't do it so much for the sound but more for seeing exhaust coming out both tips vs one side only LOL

It has a lot to do with the BS Mild hybrid system

Ok, that's interesting (that MY2021 exhaust behaves quieter even with flap open than previous MYs). How about further experiments to fully qualify? With flap open, what if you start and drive in Sport+ mode? Any difference if car is cold versus already warm? Any difference dependent on ambient temperature?

By the way, it's not that I don't believe the reports. What I don't like is the immediate jump to conclusion and blanket advice for everyone to give up. If it has been fully qualified, then that may be good advice, but the posts so far are shallow on the experimental results.

redbullfan · 04-03-2021, 04:42 PM

Quote:

Originally Posted by LexxM3

Quote:

Originally Posted by redbullfan

Quote:

Originally Posted by DCC

My 2020 is noticeably lounder with the flap open.
But you might be right about 2021 cars. They tinkered around with these cars so much there is no telling what changed.
I actually don't do it so much for the sound but more for seeing exhaust coming out both tips vs one side only LOL

It has a lot to do with the BS Mild hybrid system

Ok, that's interesting (that MY2021 exhaust behaves quieter even with flap open than previous MYs). How about further experiments to fully qualify? With flap open, what if you start and drive in Sport+ mode? Any difference if car is cold versus already warm? Any difference dependent on ambient temperature?

By the way, it's not that I don't believe the reports. What I don't like is the immediate jump to conclusion and blanket advice for everyone to give up. If it has been fully qualified, then that may be good advice, but the posts so far are shallow on the experimental results.

There's no experimenting needed, I've owned the car for 6 months and have tried it all.

Also I can assure you the car sounds quieter then this and doesn't make the same brap sound between shifts.

Dhillon63 · 09-28-2021, 08:48 PM

Reviving this thread...

Did a straight pipe in place of my resonator on my 2022 M50i. Then I learned the flaps are always closed lower than a certain RPM. I ordered a bluetooth OBD2 scanner that I'll pair with bimmerlink.

My question is...once I open the flaps using bimmerlink and pull the fuse the flaps stay open permanently? I can pull the scanner and put it away?

Also, when the fuse is put back in will valves revert to auto or I will have to connect obd2?

Wtfitzvi · 03-15-2022, 01:31 PM

Bringing this back…

Has anyone tried this method with the F95? I’ve tried searching the forums but couldn’t come up with anything.

Is the fuse location the same across all X5 models?

elite-fusion · 03-16-2022, 11:01 PM

can this be done on the 2019 X5 xDrive50i? I opened the flap today via BimmerLink app, and i heard it open, but I do NOT hear much of a difference. What am I missing?

AlpineG05 · 03-16-2022, 11:39 PM

Quote:

Originally Posted by elite-fusion

can this be done on the 2019 X5 xDrive50i? I opened the flap today via BimmerLink app, and i heard it open, but I do NOT hear much of a difference. What am I missing?

Open the valve then disconnect cable. The valve will remain open permanently.

MattTheCarNut · 01-18-2023, 12:51 PM

Just completed the mod on my ‘23 40i. Wait for the revs at the end. Not bad!

https://youtube.com/shorts/fyqv5XKKd5s?feature=share

TomiOmni · 09-15-2023, 12:58 PM

Just in case anyone else searches like I did, and did not get a clear statement ...

2023 x5 4.0, when turned off, valve is OPEN, thus pulling fuse keeps it open, sound is "better" when starting and in certain situations, but not annoying. Will keep it open.

Tom

wardy007 · 09-17-2023, 04:12 AM

WOW.. 40I sounds better that the M60I... astonishing!

gunnergahr · 03-24-2024, 10:51 PM

Quote:

Originally Posted by jad03060

FWIW, in the US, making changes to the emission controls can get you into trouble. The flap is there to help the vehicle warm up quicker by getting the catalytic converter up to temperature faster. In the meantime, you're going to be spewing more emissions than you should. All this for a little cold start improvement in sound?

No trouble at all. We don't have emissions guy running around to take readings.

poison · 03-25-2024, 03:47 PM

Couldn't one put the car on sport plus to open the flap, then pull the plug, so as to not require an OBD2 tool?

Sevn86 · 03-26-2024, 11:15 AM

Quote:

Originally Posted by poison

Couldn't one put the car on sport plus to open the flap, then pull the plug, so as to not require an OBD2 tool?

Correct! Thats how I plan to do mine once the car gets here.

xxx5phev · 04-16-2024, 01:34 PM

Quote:

Originally Posted by Sevn86

Correct! Thats how I plan to do mine once the car gets here.

I might be missing something here but why wouldn't you just always run the car in sport mode vs unplugging anything?

Sevn86 · 04-16-2024, 05:50 PM

Quote:

Originally Posted by xxx5phev

I might be missing something here but why wouldn't you just always run the car in sport mode vs unplugging anything?

It’s so you can have a louder exhaust note in comfort mode vs always having to drive it in sport mode.

I ended up removing the device that operates the flap and zip tying the flap in the open position.

04-02-2021, 11:19 AM	#112
DCC Major 312 Rep 1,040 Posts Drives: Join Date: Jan 2008 Location: Texas iTrader: (0)	My 2020 is noticeably lounder with the flap open. But you might be right about 2021 cars. They tinkered around with these cars so much there is no telling what changed. I actually don't do it so much for the sound but more for seeing exhaust coming out both tips vs one side only LOL
	Appreciate 0 Quote

09-28-2021, 08:48 PM	#116
Dhillon63 Private First Class 141 Rep 166 Posts Drives: 2022 X5 M50i Join Date: Sep 2021 Location: Toronto, Ontario iTrader: (0)	Reviving this thread... Did a straight pipe in place of my resonator on my 2022 M50i. Then I learned the flaps are always closed lower than a certain RPM. I ordered a bluetooth OBD2 scanner that I'll pair with bimmerlink. My question is...once I open the flaps using bimmerlink and pull the fuse the flaps stay open permanently? I can pull the scanner and put it away? Also, when the fuse is put back in will valves revert to auto or I will have to connect obd2?
	Appreciate 0 Quote

03-15-2022, 01:31 PM	#117
Wtfitzvi Captain 793 Rep 818 Posts Drives: ... Join Date: Jan 2018 Location: Ny iTrader: (0) Garage List 2015 Lamborghini Hu ... [10.00] 2018 BMW M3 [10.00] 1997 BMW E36 [0.00] 2022 BMW X5M [0.00] 2022 BMW 330i [0.00] 2023 Cadillac Escalade [0.00] 2023 Honda Civic Ty ... [10.00]	Bringing this back… Has anyone tried this method with the F95? I’ve tried searching the forums but couldn’t come up with anything. Is the fuse location the same across all X5 models? __________________ CURRENT: 97 E36 \| 15 Huracan 610-4 \| 18 F80 Competition \| 22 F95 Competition \| 24 G80 Competition \| 23 Escalade \| 24 Civic Type R
	Appreciate 0 Quote

03-16-2022, 11:01 PM	#118
elite-fusion Captain 161 Rep 605 Posts Drives: 335xi Join Date: Apr 2009 Location: NY iTrader: (0)	can this be done on the 2019 X5 xDrive50i? I opened the flap today via BimmerLink app, and i heard it open, but I do NOT hear much of a difference. What am I missing?
	Appreciate 0 Quote

01-18-2023, 12:51 PM	#120
MattTheCarNut Lieutenant 303 Rep 481 Posts Drives: 2023 G05 Join Date: Jan 2012 Location: Houston, TX iTrader: (1)	Just completed the mod on my ‘23 40i. Wait for the revs at the end. Not bad! https://youtube.com/shorts/fyqv5XKKd5s?feature=share __________________ 2023 G05 Phytonic Blue/Cognac, M Sport, Prem Pkg, Parking Assistance Pkg, 22", M-sport red brakes, heated armrests, 4zone climate, HK, extended shadowline
	Appreciate 0 Quote

09-15-2023, 12:58 PM	#121
TomiOmni New Member 8 Rep 14 Posts Drives: X5 Join Date: Nov 2015 Location: Lima iTrader: (0)	Just in case anyone else searches like I did, and did not get a clear statement ... 2023 x5 4.0, when turned off, valve is OPEN, thus pulling fuse keeps it open, sound is "better" when starting and in certain situations, but not annoying. Will keep it open. Tom
	Appreciate 1 LuckyBrand1249.50 Quote

09-17-2023, 04:12 AM	#122
wardy007 Enlisted Member 17 Rep 32 Posts Drives: M3 F80, X3 M40I, X5 M60I Join Date: Aug 2023 Location: SYDNEY iTrader: (0)	WOW.. 40I sounds better that the M60I... astonishing!
	Appreciate 0 Quote

03-25-2024, 03:47 PM	#124
poison Private 87 Rep 56 Posts Drives: 2024 X6 Join Date: Dec 2023 Location: LA, CA iTrader: (0)	Couldn't one put the car on sport plus to open the flap, then pull the plug, so as to not require an OBD2 tool?
	Appreciate 0 Quote