440i - Exhaust Flap Mod - The Proper Way...

Rukka · 01-12-2018, 10:47 AM

Quote:

Originally Posted by RustyBitz

£45.48 for the part was just about to purchase until then. I will wait until I’m in Germany and get it delivered to the office.

Seriously? I ordered fro HJ in warrington and it was £18.

Took a month to arrive tho.......

RustyBitz · 01-12-2018, 03:49 PM

Quote:

Originally Posted by Rukka

Seriously? I ordered fro HJ in warrington and it was £18.

Took a month to arrive tho.......

Good shout will pop in Monday. I think I passed you the other week near Ikea.

Rukka · 01-12-2018, 04:20 PM

Quote:

Originally Posted by RustyBitz

Quote:

Originally Posted by Rukka

Seriously? I ordered fro HJ in warrington and it was £18.

Took a month to arrive tho.......

Good shout will pop in Monday. I think I passed you the other week near Ikea.

Possibly - been looking out for you. Not seen the Orange beast yet. Have to sort out a meet

RustyBitz · 01-12-2018, 04:36 PM

Quote:

Originally Posted by Rukka

Possibly - been looking out for you. Not seen the Orange beast yet. Have to sort out a meet

Definitely I’m always up for that! The orange beast hasn’t been around much. I will be floating around town a lot next week.

Rukka · 01-12-2018, 04:43 PM

Quote:

Originally Posted by RustyBitz

Quote:

Originally Posted by Rukka

Possibly - been looking out for you. Not seen the Orange beast yet. Have to sort out a meet

Definitely I’m always up for that! The orange beast hasn’t been around much. I will be floating around town a lot next week.

Cool. Will PM you in the week see if you are around

fortythirtyfive · 01-13-2018, 08:53 PM

Just a warning guys.. after replugging my flap back in on my 35 MPE I found the flap didn’t work anymore. Apparently after 24hrs of it being unplugged the ecu disables it.

It took three visits to different dealers, eventually one of the three resolved it after having my car in for an entire week. It consisted of reflashing the entire car plus “more resets”.. I’m not too sure what the more part was but the dealer said it had proven sturborn and had reverted to advice from the guys in Germany.

Instead of unplugging it now; I just have a WiFi adapter plugged into the obd port and connect to bimmerlink on my phone and open the flap

Rhino at Work · 01-14-2018, 05:02 AM

Quote:

Originally Posted by producerlawson

Just a warning guys.. after replugging my flap back in on my 35 MPE I found the flap didn’t work anymore. Apparently after 24hrs of it being unplugged the ecu disables it.

It took three visits to different dealers, eventually one of the three resolved it after having my car in for an entire week. It consisted of reflashing the entire car plus “more resets”.. I’m not too sure what the more part was but the dealer said it had proven sturborn and had reverted to advice from the guys in Germany.

Instead of unplugging it now; I just have a WiFi adapter plugged into the obd port and connect to bimmerlink on my phone and open the flap

Just curious - why did you plug it back in?

Abzynthe · 01-14-2018, 01:53 PM

Quote:

Originally Posted by producerlawson

Just a warning guys.. after replugging my flap back in on my 35 MPE I found the flap didn’t work anymore. Apparently after 24hrs of it being unplugged the ecu disables it.

It took three visits to different dealers, eventually one of the three resolved it after having my car in for an entire week. It consisted of reflashing the entire car plus “more resets”.. I’m not too sure what the more part was but the dealer said it had proven sturborn and had reverted to advice from the guys in Germany.

Instead of unplugging it now; I just have a WiFi adapter plugged into the obd port and connect to bimmerlink on my phone and open the flap

Good info to know. I don't think this would put me off disabling it though as I want more noise lol

fortythirtyfive · 01-16-2018, 06:24 PM

Quote:

Originally Posted by Rhino at Work

Just curious - why did you plug it back in?

I wanted control over it as I went for a resonator delete, sometimes the res delete is too loud lol.

Rhino at Work · 01-17-2018, 07:50 AM

I've just ordered one from my dealer - they are in UK stock and they said they'll have it in 2 days.

Steve_M_Sport · 01-19-2018, 03:09 AM

Apologies if this has been answered elsewhere but does someone know the diameter of a 335D exhaust and also that of a 340i ? I know the 340i is slightly bigger but the exact diameter of both would be useful please.

Car booked in next Thursday for the dual exhuast conversion. OEM 340i rear diffuser arrived from Cotswold BMW on Wednesday for £63 delivered - great value & service.

dazwhite · 01-19-2018, 09:53 AM

Quote:

Originally Posted by Rhino at Work

I've just ordered one from my dealer - they are in UK stock and they said they'll have it in 2 days.

+1 £15.65 plus VAT ☺

Rhino at Work · 01-19-2018, 10:09 AM

Quote:

Originally Posted by dazwhite

Quote:

Originally Posted by Rhino at Work

I've just ordered one from my dealer - they are in UK stock and they said they'll have it in 2 days.

+1 £15.65 plus VAT ☺

And indeed it did arrive in 2 days so I have a little job for the weekend.

Abzynthe · 01-20-2018, 02:52 PM

I got one of these today. Before I squeeze under the car, I'm assuming it doesn't matter whether you have mppsk or stock exhaust? Mines just unplugged at the moment.

sexpot · 05-28-2018, 03:37 PM

Just ordered this part, posting for reference later once it arrives!

Thanks for the guide Rukka

Abzynthe · 05-29-2018, 02:58 AM

I fitted it to my MPPSK over the weekend

Cold start in the garage is almost deafening. Haha.

sexpot · 05-30-2018, 05:28 PM

Quote:

Originally Posted by Abzynthe

I fitted it to my MPPSK over the weekend

Cold start in the garage is almost deafening. Haha.

I have the 2018 440i GC as well, how did you perform the mod? I noticed my car always starts with the exhaust flap open on a cold start. Do you just shut the engine off immediately and install the plug? Or do you start the car and run to the back and unplug it while the car is running?

I had to order my dummy plug from the dealership and it's coming from Germany so I'm two weeks out from doing this.

Thanks

Abzynthe · 05-31-2018, 03:01 AM

Quote:

Originally Posted by sexpot

I have the 2018 440i GC as well, how did you perform the mod? I noticed my car always starts with the exhaust flap open on a cold start. Do you just shut the engine off immediately and install the plug? Or do you start the car and run to the back and unplug it while the car is running?

I had to order my dummy plug from the dealership and it's coming from Germany so I'm two weeks out from doing this.

Thanks

Mine definitely didn't start with the flaps open as its so much louder now haha.

The flaps stay open when you turn the car off, so easiest way would be to start the car, put it into sport, then after 30 seconds or so, press the accelerator slightly and you will hear the flaps open. Turn the car off, then fit the plug before restarting

sexpot · 06-01-2018, 10:40 AM

Interesting, maybe it's a regional thing?

Edit - Figured it out. I had changed my Sport Mode settings while ago and forgot that it was set to Chassis Only. I changed it back to Drivetrain + Chassis and now the flap opens correctly.

morand · 01-22-2019, 04:16 AM

Hi, thanks for the simple and very useful guide to this issue.

I have a question. Did you do anything to cover up the connector at the flap actuator to avoid dirt coming into the plug when the servo cable is disconnected?

ian332isport · 01-22-2019, 05:10 AM

Quote:

Originally Posted by morand

I have a question. Did you do anything to cover up the connector at the flap actuator to avoid dirt coming into the plug when the servo cable is disconnected?

I used one of these:

https://www.ebay.co.uk/itm/BMW-Wirin...item282cc7704f

Fill the holes in the back of the connector with a bit of silicone to stop any water going in the holes.

Randy Johnson · 03-25-2020, 07:13 PM

Just a tip, you could just remove the actuator, safety wire the valve open and put the actuator back in place. No need for a dummy circuit.

01-13-2018, 08:53 PM	#28
fortythirtyfive Major 643 Rep 1,384 Posts Drives: 435i MS Join Date: Sep 2016 Location: North iTrader: (0)	Just a warning guys.. after replugging my flap back in on my 35 MPE I found the flap didn’t work anymore. Apparently after 24hrs of it being unplugged the ecu disables it. It took three visits to different dealers, eventually one of the three resolved it after having my car in for an entire week. It consisted of reflashing the entire car plus “more resets”.. I’m not too sure what the more part was but the dealer said it had proven sturborn and had reverted to advice from the guys in Germany. Instead of unplugging it now; I just have a WiFi adapter plugged into the obd port and connect to bimmerlink on my phone and open the flap
	Appreciate 1 Rich9600740.50 Quote

01-17-2018, 07:50 AM	#32
Rhino at Work Major 714 Rep 1,242 Posts Drives: G21 330i Portimao Blue Join Date: Aug 2012 Location: Yorkshire iTrader: (0)	I've just ordered one from my dealer - they are in UK stock and they said they'll have it in 2 days. __________________ Current: Portimao Blue G21 330i Previous: EB F30 340i Shadow Edition Previous: EB F30 330d xdrive
	Appreciate 1 Quote

01-19-2018, 03:09 AM	#33
Steve_M_Sport Lieutenant Colonel 614 Rep 1,799 Posts Drives: U06 230e Active Tourer Join Date: Feb 2013 Location: Leicestershire iTrader: (0)	Apologies if this has been answered elsewhere but does someone know the diameter of a 335D exhaust and also that of a 340i ? I know the 340i is slightly bigger but the exact diameter of both would be useful please. Car booked in next Thursday for the dual exhuast conversion. OEM 340i rear diffuser arrived from Cotswold BMW on Wednesday for £63 delivered - great value & service. __________________ U06 230e Active Tourer \| Previous : 2019 F31 340i : 2017 F31 335D M-Sport
	Appreciate 0 Quote

01-20-2018, 02:52 PM	#36
Abzynthe Colonel 1388 Rep 2,129 Posts Drives: BMW 440i Gran Coupe LCI Join Date: Jan 2017 Location: UK iTrader: (0)	I got one of these today. Before I squeeze under the car, I'm assuming it doesn't matter whether you have mppsk or stock exhaust? Mines just unplugged at the moment. __________________ Previous: 2010 F01 740d M Sport \| 2015 F36 420d M Sport Current: 2018 F36 440i M Sport (Stage 1 BM3, xHP stage 3)
	Appreciate 0 Quote

05-28-2018, 03:37 PM	#37
sexpot Enlisted Member 7 Rep 44 Posts Drives: 2018 F36 Join Date: Dec 2015 Location: Vancouver, BC iTrader: (0)	Just ordered this part, posting for reference later once it arrives! Thanks for the guide Rukka
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05-29-2018, 02:58 AM	#38
Abzynthe Colonel 1388 Rep 2,129 Posts Drives: BMW 440i Gran Coupe LCI Join Date: Jan 2017 Location: UK iTrader: (0)	I fitted it to my MPPSK over the weekend Cold start in the garage is almost deafening. Haha. __________________ Previous: 2010 F01 740d M Sport \| 2015 F36 420d M Sport Current: 2018 F36 440i M Sport (Stage 1 BM3, xHP stage 3)
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06-01-2018, 10:40 AM	#41
sexpot Enlisted Member 7 Rep 44 Posts Drives: 2018 F36 Join Date: Dec 2015 Location: Vancouver, BC iTrader: (0)	Interesting, maybe it's a regional thing? Edit - Figured it out. I had changed my Sport Mode settings while ago and forgot that it was set to Chassis Only. I changed it back to Drivetrain + Chassis and now the flap opens correctly. Last edited by sexpot; 06-01-2018 at 04:41 PM..
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01-22-2019, 04:16 AM	#42
morand Registered 2 Rep 1 Posts Drives: 440i Coupe Join Date: Jan 2019 Location: Denmark iTrader: (0)	Exhaust flap mod Hi, thanks for the simple and very useful guide to this issue. I have a question. Did you do anything to cover up the connector at the flap actuator to avoid dirt coming into the plug when the servo cable is disconnected?
	Appreciate 1 RyanG0.00 Quote

03-25-2020, 07:13 PM	#44
Randy Johnson M340i 394 Rep 974 Posts Drives: BMW M340i Join Date: Sep 2019 Location: South FLA iTrader: (1) Garage List 2021 BMW M340i [10.00]	Just a tip, you could just remove the actuator, safety wire the valve open and put the actuator back in place. No need for a dummy circuit.
	Appreciate 0 Quote