Exhaust flaps open

2015-328i · 11-10-2018, 03:32 PM

I have a 2015 328i sport and I wanted to know how I can keep my exhaust flaps open all the time. if I keep them open will I get a light on the dash and is there any side effects of keeping the flaps open ?

rackjuediger · 11-10-2018, 04:13 PM

JB4 stage 2 has an option for an exhuast flap adjustability. Otherwise just keep it in sport mode

2015-328i · 11-10-2018, 04:15 PM

Quote:

Originally Posted by rackjuediger

JB4 stage 2 has an option for an exhuast flap adjustability. Otherwise just keep it in sport mode

is there any way I can do it without jb4 or tune

paimon.soror · 11-10-2018, 04:23 PM

Remove the spring between the motor and the valve. Use ss wire to hold valve in open position.

hawkeky · 11-10-2018, 05:04 PM

I have mine open all the time, no issues. While it it was open I unplugged it from underneath, around the exhaust. You can find YouTube on where it's exactly located.

feng · 11-10-2018, 07:03 PM

I think there must be some regional coding differences.

If I put my 328i into sports or sports+ mode, it does not change the behavior of the exhaust flap. I have mine flashed with BM3 stage 1 and if I use diagnostics, I know the flap operates (can open and close).

Does anyone elses 328i's flap do this too?

paimon.soror · 11-10-2018, 08:01 PM

If you have an f36, it behaves differently. Flap doesn't open automatically by switching to sport unless under load

rjd_F30 · 11-10-2018, 09:33 PM

Just wait for it to open on it's own, and then unplug the little motor that controls the flap. It's located right behind the exhaust tips. You won't get any lights on the dash or anything like that.

RMachuca3d · 11-11-2018, 02:00 AM

Quote:

Originally Posted by rjdnyy224

Just wait for it to open on it's own, and then unplug the little motor that controls the flap. It's located right behind the exhaust tips. You won't get any lights on the dash or anything like that.

To be precise, it does throw a silent code. What I did was leave everything plugged in, just remove the spring with some pliers and secure the valve notch in the open position.

feng · 11-11-2018, 04:11 AM

Quote:

Originally Posted by paimon.soror

If you have an f36, it behaves differently. Flap doesn't open automatically by switching to sport unless under load

Must be the same for F31.

I think you can change it though so I might have a chat to the BM3 guys once I go Stage 2. I'm pretty sure it can be coded into the tune or something.

rjd_F30 · 11-11-2018, 09:09 AM

Quote:

Originally Posted by RMachuca3d

To be precise, it does throw a silent code. What I did was leave everything plugged in, just remove the spring with some pliers and secure the valve notch in the open position.

It does, hence why I specified lights on the dash not just codes generally. But yah that works too if you want to remove the spring. Lots of options OP

paimon.soror · 11-11-2018, 12:23 PM

Quote:

Originally Posted by feng

Must be the same for F31.

I think you can change it though so I might have a chat to the BM3 guys once I go Stage 2. I'm pretty sure it can be coded into the tune or something.

Fyi worked with them on this. We got closer. Right now the latest tune version for n55 we have it so that as soon as you hit the pedal the flap opens and stays open. Which is nice because it keeps the car quiet on cold starts, then once i tap the gas it opens up.

Billfitz · 11-11-2018, 05:14 PM

https://f30.bimmerpost.com/forums/sh....php?t=1220699

N26Ghost · 11-12-2018, 12:37 AM

Just use Bimmercode with Bimmerlink and you can have full control over it.

feng · 11-12-2018, 06:53 AM

Quote:

Originally Posted by paimon.soror

Fyi worked with them on this. We got closer. Right now the latest tune version for n55 we have it so that as soon as you hit the pedal the flap opens and stays open. Which is nice because it keeps the car quiet on cold starts, then once i tap the gas it opens up.

Thanks... I might ping them when I get around to Stage 2

Quote:

Originally Posted by Billfitz

https://f30.bimmerpost.com/forums/sh....php?t=1220699

Thanks for this. I did read up on it. The weird thing is that the F30 behaves as the thread mentions. Warm up time etc. I have a F31 and it doesn't behave like that. If my car is warm, and I switch to sports/sports+, valve definitely does not open up. But I know it does work due to soot build up as well as diagnostics within the BM3 app.

Same behaviour with or without BM3.

11-10-2018, 03:32 PM	#1
2015-328i New Member 5 Rep 29 Posts Drives: 2015 BMW 328i Join Date: Aug 2018 Location: toronto iTrader: (0)	Exhaust flaps open I have a 2015 328i sport and I wanted to know how I can keep my exhaust flaps open all the time. if I keep them open will I get a light on the dash and is there any side effects of keeping the flaps open ?
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11-10-2018, 04:13 PM	#2
rackjuediger Second Lieutenant 143 Rep 242 Posts Drives: 2013 328i 6mt Join Date: Apr 2018 Location: Houston, Texas iTrader: (0) Garage List 2013 BMW 328i [0.00]	JB4 stage 2 has an option for an exhuast flap adjustability. Otherwise just keep it in sport mode __________________ F30 328i 6mt Injen, ER, BM3, Solowerks, IND, BMS, BBS E46 M3 smg2 Bimmerworld, H
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11-10-2018, 04:23 PM	#4
paimon.soror Captain 629 Rep 965 Posts Drives: 2016 F36 435x MSport Join Date: Oct 2017 Location: Hartford, CT iTrader: (3) Garage List 2016 BMW 435xi GC [6.00]	Remove the spring between the motor and the valve. Use ss wire to hold valve in open position.
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11-10-2018, 05:04 PM	#5
hawkeky New Member 8 Rep 15 Posts Drives: F30 Join Date: Sep 2018 Location: New Jersey iTrader: (0) Garage List 2015 BMW 328i xDrive [0.00]	I have mine open all the time, no issues. While it it was open I unplugged it from underneath, around the exhaust. You can find YouTube on where it's exactly located.
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11-10-2018, 07:03 PM	#6
feng Lieutenant 128 Rep 504 Posts Drives: 2014 F31 328i M-Sport AW Join Date: Nov 2014 Location: Brisbane iTrader: (0)	I think there must be some regional coding differences. If I put my 328i into sports or sports+ mode, it does not change the behavior of the exhaust flap. I have mine flashed with BM3 stage 1 and if I use diagnostics, I know the flap operates (can open and close). Does anyone elses 328i's flap do this too?
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11-10-2018, 08:01 PM	#7
paimon.soror Captain 629 Rep 965 Posts Drives: 2016 F36 435x MSport Join Date: Oct 2017 Location: Hartford, CT iTrader: (3) Garage List 2016 BMW 435xi GC [6.00]	If you have an f36, it behaves differently. Flap doesn't open automatically by switching to sport unless under load
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11-10-2018, 09:33 PM	#8
rjd_F30 Brigadier General 2000 Rep 3,680 Posts Drives: 2013 335i 6MT Join Date: Jun 2017 Location: New Jersey iTrader: (0)	Just wait for it to open on it's own, and then unplug the little motor that controls the flap. It's located right behind the exhaust tips. You won't get any lights on the dash or anything like that. __________________ Instagram: rjd_f30 \| Current: EBII 2013 335i 6MT RWD & Sprint Blue 2008 Audi RS4 \| Retired: 2013 328i, 2000 XTerra, 2022 Civic Si \|
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11-11-2018, 05:14 PM	#13
Billfitz Lieutenant General 8243 Rep 16,082 Posts Drives: '15 328iX GT Join Date: Jan 2015 Location: New Hampshire iTrader: (0)	https://f30.bimmerpost.com/forums/sh....php?t=1220699
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11-12-2018, 12:37 AM	#14
N26Ghost Lieutenant 497 Rep 537 Posts Drives: 2014 BMW 328i M Sport Join Date: Mar 2018 Location: Elk Grove, CA iTrader: (0)	Just use Bimmercode with Bimmerlink and you can have full control over it. __________________ '14 F30 328i M Sport // FBO // bm3 Stage 2+ DME Tune // Stage 1 TCU Tune // Apex EC-7s on Conti DWS06+s // 1 of 6 ever made of this spec (3C13 US-SULEV German-built //
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