M240i Exhuast Valve

kianf22 · 04-29-2020, 03:35 PM

Hello! Recently installed Remus non resonated catback and loving it! Except.. I have weird functionality from my exhuast valve. (I have seen the valve in 3 different positions. Closed. Half open. Open.) I have been considering purchasing a valve controller, but wonder how much of a difference the valve actually makes? Does closing the valve really quiet the car down enough to justify spending a couple hundred bucks on a valve controller? Would like to close my valves around coppers and when coming home late at night. All feedback appreciated

kianf22 · 05-05-2020, 06:45 PM

The Exhaust valve is initially open before starting the car but closes upon cold start. It then opens about 10-30 seconds later (haven't timed it) but doesn't seem to close again after that. This is in comfort mode. It seems like the valve is only there to quiet the cold start but then opens later and does not shut after. Is this normal functionality?

NISFAN · 05-06-2020, 06:49 AM

Sounds like it. The valve operation is different to previous version cars. Seems to be pretty much open most of the time.

kianf22 · 05-07-2020, 04:29 PM

Quote:

Originally Posted by NISFAN

Sounds like it. The valve operation is different to previous version cars. Seems to be pretty much open most of the time.

very interesting. Thank you! I have a MY2020 if that makes a difference.

e46dreammachine · 06-06-2020, 03:41 PM

Does the MPE have a valve like the stock exhaust? I see that it has a connector on the MPE just not sure if it controls it the same way the stock one does.

gosi · 06-06-2020, 03:51 PM

The MPE doesn’t have a valve.

helloelectro · 06-07-2020, 09:19 AM

The valve will open and close while you are driving too based on various conditions. So even though you only see it fully open when looking at the car while not driving it's doing more while driving. There are a few posts about the "purpose" of the flap floating around here on this forum. I know you said you aren't tuning the car but with some tune software you can designate the flap to stay wide open in different drive modes after cold start.

kianf22 · 06-08-2020, 12:28 AM

Quote:

Originally Posted by helloelectro

The valve will open and close while you are driving too based on various conditions. So even though you only see it fully open when looking at the car while not driving it's doing more while driving. There are a few posts about the "purpose" of the flap floating around here on this forum. I know you said you aren't tuning the car but with some tune software you can designate the flap to stay wide open in different drive modes after cold start.

Oh okay! Makes sense. I thought it would be closed by default in comfort.

04-29-2020, 03:35 PM	#1
kianf22 First Lieutenant 64 Rep 348 Posts Drives: 2020 BMW M240i Join Date: Jul 2019 Location: Southern California iTrader: (1)	M240i Exhuast Valve Hello! Recently installed Remus non resonated catback and loving it! Except.. I have weird functionality from my exhuast valve. (I have seen the valve in 3 different positions. Closed. Half open. Open.) I have been considering purchasing a valve controller, but wonder how much of a difference the valve actually makes? Does closing the valve really quiet the car down enough to justify spending a couple hundred bucks on a valve controller? Would like to close my valves around coppers and when coming home late at night. All feedback appreciated __________________ Pure800 - DS2 HPFP - Nostrum S1 - ER Catless DP - Remus Non-Resonated Catback - BM3 Flex Fuel Kit - Ross V1 VTA PCV - Custom Tunes on MHD/BM3 - xHP Stage 3 - TCKline SA/DA Coils - Apex ARC8s - Vicrez Carbon Fiber CSL Trunk - ALP Laser System - Escort Max 360c with Blendmount + more... \| IG: kianf22 \|
	Appreciate 0 Tweet Quote

05-05-2020, 06:45 PM	#2
kianf22 First Lieutenant 64 Rep 348 Posts Drives: 2020 BMW M240i Join Date: Jul 2019 Location: Southern California iTrader: (1)	The Exhaust valve is initially open before starting the car but closes upon cold start. It then opens about 10-30 seconds later (haven't timed it) but doesn't seem to close again after that. This is in comfort mode. It seems like the valve is only there to quiet the cold start but then opens later and does not shut after. Is this normal functionality? __________________ Pure800 - DS2 HPFP - Nostrum S1 - ER Catless DP - Remus Non-Resonated Catback - BM3 Flex Fuel Kit - Ross V1 VTA PCV - Custom Tunes on MHD/BM3 - xHP Stage 3 - TCKline SA/DA Coils - Apex ARC8s - Vicrez Carbon Fiber CSL Trunk - ALP Laser System - Escort Max 360c with Blendmount + more... \| IG: kianf22 \|
	Appreciate 0 Quote

05-06-2020, 06:49 AM	#3
NISFAN Major General 3487 Rep 9,709 Posts Drives: BMW M2 Join Date: Aug 2012 Location: Bedford UK iTrader: (0)	Sounds like it. The valve operation is different to previous version cars. Seems to be pretty much open most of the time.
	Appreciate 1 kianf2264.00 Quote

06-06-2020, 03:41 PM	#5
e46dreammachine Private 12 Rep 56 Posts Drives: e46 325XI Join Date: Mar 2020 Location: Toronto iTrader: (0)	Does the MPE have a valve like the stock exhaust? I see that it has a connector on the MPE just not sure if it controls it the same way the stock one does.
	Appreciate 0 Quote

06-06-2020, 03:51 PM	#6
gosi Private First Class 96 Rep 147 Posts Drives: M240 Join Date: Nov 2019 Location: Slovenia iTrader: (0)	The MPE doesn’t have a valve.
	Appreciate 0 Quote

06-07-2020, 09:19 AM	#7
helloelectro First Lieutenant 174 Rep 336 Posts Drives: 2018 BMW m240i Join Date: Jan 2019 Location: Dallas,TX iTrader: (1)	The valve will open and close while you are driving too based on various conditions. So even though you only see it fully open when looking at the car while not driving it's doing more while driving. There are a few posts about the "purpose" of the flap floating around here on this forum. I know you said you aren't tuning the car but with some tune software you can designate the flap to stay wide open in different drive modes after cold start.
	Appreciate 1 kianf2264.00 Quote