440xi software update

Skyhigh · 02-03-2019, 04:47 AM

It is not supposed to open under 4000rpm in Comfort! Irrespective of startup.
Why should it?

Mine never did (and I still don't have the update).

vinzcast21 · 02-03-2019, 04:53 AM

Quote:

Originally Posted by anh3

got this just this last Monday, SI B12 01 19. It definitely did something to the exhaust flap, before update both Comfort AND Eco Pro mode opens up the flap after warm-up, now it is not. That was the difference between the pre-update 340 and 435IX I had two years ago, now after the update the exhaust flap behavior between drive modes is similar to the 435.

Glad I am not the only one who noticed this

Skyhigh · 02-03-2019, 04:58 AM

Sounds like a SW bug you had that is now addressed

vinzcast21 · 02-06-2019, 12:32 AM

Quote:

Originally Posted by Skyhigh

It is not supposed to open under 4000rpm in Comfort! Irrespective of startup.
Why should it?

Mine never did (and I still don't have the update).

well I used to own a 328i and it always open the second flap after some time in startup. the 340i before the update also does that

Skyhigh · 02-06-2019, 12:35 AM

I know nothing about the 328, but the 340i (stock) has one flap only and it is not supposed to open at all in Comfort, unless 4000 rpm are reached, to reduce back-pressure. What's the point then of Sport if Comfort does the same to the exhaust.

vinzcast21 · 02-06-2019, 02:59 PM

Quote:

Originally Posted by Skyhigh

I know nothing about the 328, but the 340i (stock) has one flap only and it is not supposed to open at all in Comfort, unless 4000 rpm are reached, to reduce back-pressure. What's the point then of Sport if Comfort does the same to the exhaust.

its open when startup and when you put the gear selector to Drive, the flap will close again

Skyhigh · 02-11-2019, 06:49 AM

Those of you who have MPPSK and got the update already:
Can you please confirm that nothing changed sound-wise in Sport and valve control is still as before (valves always open in Sport)?

There has been contradictory information in the air...

davefromfla · 02-11-2019, 01:13 PM

Getting my update next Monday when I take the car in for the 1st service. Man, I hope it doesn't change the sound, or the way the flaps operate now.

Fazil · 02-11-2019, 04:45 PM

Quote:

Originally Posted by Skyhigh

Those of you who have MPPSK and got the update already:
Can you please confirm that nothing changed sound-wise in Sport and valve control is still as before (valves always open in Sport)?

There has been contradictory information in the air...

I just had my MPPSK fitted on a 2016 340i last week.
Its loud. Mad. Insane.
Still get gunshots on demand between 3-4k revs

Valves don't open in comfort unless above 4k as expected.
Valves open and stay open in sport after a min or 2, but require a touch of the accelerator to open as expected.

Did I mention its loud?

Blubaron79 · 02-12-2019, 10:06 AM

Quote:

Originally Posted by Fazil

Quote:

Originally Posted by Skyhigh

Those of you who have MPPSK and got the update already:
Can you please confirm that nothing changed sound-wise in Sport and valve control is still as before (valves always open in Sport)?

There has been contradictory information in the air...

I just had my MPPSK fitted on a 2016 340i last week.
Its loud. Mad. Insane.
Still get gunshots on demand between 3-4k revs

Valves don't open in comfort unless above 4k as expected.
Valves open and stay open in sport after a min or 2, but require a touch of the accelerator to open as expected.

Did I mention its loud?

Yes, mine is loud and it's great. When I drop the rear seats to fit my skis in it is almost too loud! Jk!

2turboBMW · 02-13-2019, 07:56 PM

Quote:

Originally Posted by Skyhigh

Those of you who have MPPSK and got the update already:
Can you please confirm that nothing changed sound-wise in Sport and valve control is still as before (valves always open in Sport)?

There has been contradictory information in the air...

Had it done last week and no change in exhaust noise or behavior with MPPSK. It burbles and pops like always. I never got frequent "gun shot" sounds. I've always had to go WOT and let off around 5k rpm and give a little blip on the throttle to get that noise.

davefromfla · 02-19-2019, 03:21 PM

Got my update today, and NO change in sound or exhaust valve function.

antzcrashing · 02-27-2019, 08:16 PM

Can someone summarize how these cars should behave before and after this update? How can you tell if the exhaust valve is open or closed, just the pop of the exhaust note? Whats the magic of the 4000 rpm and the valve in eco, comfort, and sport modes? Does the MPPK affect the valve behavior? Thanks

Skyhigh · 02-27-2019, 10:14 PM

The only thing the update is supposed to change (according to official spec) is that it no longer allows you to rev the engine up beyond 4000 rpm when stationary. That's it. Now there are speculations that it also secretly affects the valve control logic or engine mixture, but these are unsubstantiated and only claimed by single users (low percentage of those who got the update). I for one have not received the update yet so no first-hand experience.

Update aside, the valve control logic is:
Comfort - valve(s) closed under 4000 rpm, open above.
Sport/Sport+ - valve(s) open at all times.

That's it. Valid for stock and MPPSK.

Most reliable way to tell whether the valves are open or closed is the visual check

In the MPPSK case there is very little doubt though, based on acoustic feedback

antzcrashing · 02-28-2019, 10:46 PM

Quote:

Originally Posted by Skyhigh

The only thing the update is supposed to change (according to official spec) is that it no longer allows you to rev the engine up beyond 4000 rpm when stationary. That's it. Now there are speculations that it also secretly affects the valve control logic or engine mixture, but these are unsubstantiated and only claimed by single users (low percentage of those who got the update). I for one have not received the update yet so no first-hand experience.

Update aside, the valve control logic is:
Comfort - valve(s) closed under 4000 rpm, open above.
Sport/Sport+ - valve(s) open at all times.

That's it. Valid for stock and MPPSK.

Most reliable way to tell whether the valves are open or closed is the visual check

In the MPPSK case there is very little doubt though, based on acoustic feedback

What do you mean engine mixture? My car seems less responsive and quieter in all modes including sport, it also could be placebo affect, but I dont think so

Skyhigh · 03-01-2019, 01:59 AM

The pops and bangs are nothing else than unburned fuel that ignites in the exhaust system.
It is the engine management that defines how much of those you get.

antzcrashing · 03-02-2019, 12:31 PM

Quote:

Originally Posted by Skyhigh

The pops and bangs are nothing else than unburned fuel that ignites in the exhaust system.
It is the engine management that defines how much of those you get.

Right but if bmw modified the engine management with the software update (recall) then it could result in less of that effect. Does anyone have a link to official bmw statement on the recall?

Skyhigh · 03-02-2019, 12:32 PM

If one could only go one page back of this thread......

Poncho38 · 03-19-2019, 04:23 PM

Quote:

Originally Posted by Skyhigh

If one could only go one page back of this thread......

So, I recently took my '18 440xi GC in for an oil change and got a reprogram. The advisor didnt know Jack what it was about when I asked.

This is the note on my receipt for the recall/reprogram.

Bulletin 12 94 18 0012880400

What I can report right now is - the engine sounds more aggressive at start up. It also seems more responsive while driving - but that might just be the nicer weather we've been having in Toronto.

What I can report for sure is - my gas mileage has increased!

Was getting 11.9L/100km before = 420km per tank before the empty light goes on.

After the reprogram - my mileage is 10.8 and I just got about 460-480km on a tank.

I hope this sticks!! Lol

BackBlue · 03-21-2019, 12:19 AM

Quote:

Originally Posted by Skyhigh

If one could only go one page back of this thread......

^THIS!
The problem is this thread is addressing 2 totally different SIB's. What a sh!t show of information ...

antzcrashing · 03-22-2019, 07:31 PM

Quote:

Originally Posted by EstorilF33

Quote:

Originally Posted by Skyhigh

If one could only go one page back of this thread......

^THIS!
The problem is this thread is addressing 2 totally different SIB's. What a sh!t show of information ...

Agree. Too bad theres just not one person wise enough and generous enough to explain the situations. Oh well thread failure

BackBlue · 03-22-2019, 10:43 PM

Quote:

Originally Posted by antzcrashing

Agree. Too bad theres just not one person wise enough and generous enough to explain the situations. Oh well thread failure

Ok You talked me into it.
The two different SIB's and thread info are split here:

SI B12 01 19: https://f30.bimmerpost.com/forums/sh...5#post24555195

SI B12 03 18: https://f30.bimmerpost.com/forums/sh...7#post24555227

Now, if only someone with the power of moderation would close this thread......

02-03-2019, 04:47 AM	#23
Skyhigh Brigadier General 1879 Rep 3,860 Posts Drives: BMW F36 Join Date: Apr 2018 Location: Europe iTrader: (0)	It is not supposed to open under 4000rpm in Comfort! Irrespective of startup. Why should it? Mine never did (and I still don't have the update). __________________ "Large increases in cost with questionable increases in performance can be tolerated only in cars and women."
	Appreciate 0 Quote

02-03-2019, 04:58 AM	#25
Skyhigh Brigadier General 1879 Rep 3,860 Posts Drives: BMW F36 Join Date: Apr 2018 Location: Europe iTrader: (0)	Sounds like a SW bug you had that is now addressed __________________ "Large increases in cost with questionable increases in performance can be tolerated only in cars and women."
	Appreciate 0 Quote

02-06-2019, 12:35 AM	#27
Skyhigh Brigadier General 1879 Rep 3,860 Posts Drives: BMW F36 Join Date: Apr 2018 Location: Europe iTrader: (0)	I know nothing about the 328, but the 340i (stock) has one flap only and it is not supposed to open at all in Comfort, unless 4000 rpm are reached, to reduce back-pressure. What's the point then of Sport if Comfort does the same to the exhaust. __________________ "Large increases in cost with questionable increases in performance can be tolerated only in cars and women."
	Appreciate 0 Quote

02-11-2019, 06:49 AM	#29
Skyhigh Brigadier General 1879 Rep 3,860 Posts Drives: BMW F36 Join Date: Apr 2018 Location: Europe iTrader: (0)	Those of you who have MPPSK and got the update already: Can you please confirm that nothing changed sound-wise in Sport and valve control is still as before (valves always open in Sport)? There has been contradictory information in the air... __________________ "Large increases in cost with questionable increases in performance can be tolerated only in cars and women."
	Appreciate 0 Quote

02-11-2019, 01:13 PM	#30
davefromfla First Lieutenant 114 Rep 354 Posts Drives: 2021 M440ix Join Date: Nov 2010 Location: Florida iTrader: (0)	Getting my update next Monday when I take the car in for the 1st service. Man, I hope it doesn't change the sound, or the way the flaps operate now. __________________ Previous: E36 M3, E46 M3, 135i, M235i, 440i
	Appreciate 0 Quote

02-19-2019, 03:21 PM	#34
davefromfla First Lieutenant 114 Rep 354 Posts Drives: 2021 M440ix Join Date: Nov 2010 Location: Florida iTrader: (0)	Got my update today, and NO change in sound or exhaust valve function. __________________ Previous: E36 M3, E46 M3, 135i, M235i, 440i
	Appreciate 0 Quote

02-27-2019, 08:16 PM	#35
antzcrashing Brigadier General 1904 Rep 3,213 Posts Drives: 2018 BMW 440i GC Join Date: Sep 2007 Location: Eastern MA iTrader: (1) Garage List 2018 BMW 440i GC xD ... [9.75]	Can someone summarize how these cars should behave before and after this update? How can you tell if the exhaust valve is open or closed, just the pop of the exhaust note? Whats the magic of the 4000 rpm and the valve in eco, comfort, and sport modes? Does the MPPK affect the valve behavior? Thanks
	Appreciate 0 Quote

02-27-2019, 10:14 PM	#36
Skyhigh Brigadier General 1879 Rep 3,860 Posts Drives: BMW F36 Join Date: Apr 2018 Location: Europe iTrader: (0)	The only thing the update is supposed to change (according to official spec) is that it no longer allows you to rev the engine up beyond 4000 rpm when stationary. That's it. Now there are speculations that it also secretly affects the valve control logic or engine mixture, but these are unsubstantiated and only claimed by single users (low percentage of those who got the update). I for one have not received the update yet so no first-hand experience. Update aside, the valve control logic is: Comfort - valve(s) closed under 4000 rpm, open above. Sport/Sport+ - valve(s) open at all times. That's it. Valid for stock and MPPSK. Most reliable way to tell whether the valves are open or closed is the visual check In the MPPSK case there is very little doubt though, based on acoustic feedback __________________ "Large increases in cost with questionable increases in performance can be tolerated only in cars and women."
	Appreciate 1 azuritschwarz347.50 Quote

03-01-2019, 01:59 AM	#38
Skyhigh Brigadier General 1879 Rep 3,860 Posts Drives: BMW F36 Join Date: Apr 2018 Location: Europe iTrader: (0)	The pops and bangs are nothing else than unburned fuel that ignites in the exhaust system. It is the engine management that defines how much of those you get. __________________ "Large increases in cost with questionable increases in performance can be tolerated only in cars and women."
	Appreciate 0 Quote

03-02-2019, 12:32 PM	#40
Skyhigh Brigadier General 1879 Rep 3,860 Posts Drives: BMW F36 Join Date: Apr 2018 Location: Europe iTrader: (0)	If one could only go one page back of this thread...... __________________ "Large increases in cost with questionable increases in performance can be tolerated only in cars and women."
	Appreciate 1 sttlondon44.50 Quote