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      11-23-2018, 02:26 PM   #1
bdogk
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Easiest Way to Keep Exhaust Valve Open?

Can aonyone point me to the simplest way of keeping the exhaust valve open on my M2C.

Is there a specific fuse I can remove or the proper procedure of pulling the valve harness.

I also read in another thread somewhere a while back there's a harness plug you need to purchase if you pull the harness.
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      11-23-2018, 08:06 PM   #2
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Quote:
Originally Posted by hjk View Post
Can aonyone point me to the simplest way of keeping the exhaust valve open on my M2C.

Is there a specific fuse I can remove or the proper procedure of pulling the valve harness.

I also read in another thread somewhere a while back there's a harness plug you need to purchase if you pull the harness.
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      11-23-2018, 08:33 PM   #3
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Saw this in my suggestions..
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      11-23-2018, 09:08 PM   #4
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Quote:
Originally Posted by SUB-ZERO View Post
Quote:
Originally Posted by hjk View Post
Can aonyone point me to the simplest way of keeping the exhaust valve open on my M2C.

Is there a specific fuse I can remove or the proper procedure of pulling the valve harness.

I also read in another thread somewhere a while back there's a harness plug you need to purchase if you pull the harness.
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      11-23-2018, 09:34 PM   #5
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The easiest way is to remove fuses 146 and 147 (5A fuses) after you have stopped the car in Sport + mode. Don"t bother....... the result of leaving open flaps equal to 0 ...in Efficient and Sport mode the exhaust will be silent....our enemy is OPF.

My conclusion: slip on aftermarket exhaust (to be legal). Something like Remus, Lightweight and soon Akrapovic.


Now I see...you are from Canada and you dont,t have OPF installed on the car.)))

I will send you somme pictures with the steps to remouve that fuses

Last edited by CJ41BIG; 11-23-2018 at 09:44 PM..
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      11-26-2018, 12:52 PM   #6
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Quote:
Originally Posted by CJ41BIG View Post
The easiest way is to remove fuses 146 and 147 (5A fuses) after you have stopped the car in Sport + mode. Don"t bother....... the result of leaving open flaps equal to 0 ...in Efficient and Sport mode the exhaust will be silent....our enemy is OPF.

My conclusion: slip on aftermarket exhaust (to be legal). Something like Remus, Lightweight and soon Akrapovic.


Now I see...you are from Canada and you dont,t have OPF installed on the car.)))

I will send you somme pictures with the steps to remouve that fuses
Yes, please do. You can also PM me if you prefer. Thanks.
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      11-27-2018, 08:58 PM   #7
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Step 1: stop de engine in sport+ mode (flaps will remain open)
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      11-27-2018, 09:00 PM   #8
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Step2: in right-front of trunk will find box fuses
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      11-27-2018, 09:03 PM   #9
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Step3: pull out these 2 fuses
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      11-27-2018, 09:07 PM   #10
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Step4: problem solved without any error lights in bord.
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      01-01-2019, 07:38 PM   #11
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Quote:
Originally Posted by hjk View Post
Yes, please do. You can also PM me if you prefer. Thanks.
hjk did you try the fuse mod? how different was the sound afterwards?
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      01-01-2019, 09:43 PM   #12
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I'm curious about this. I've heard another way is just disconnect the valve harnesses after stopping in Sport+.
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      01-02-2019, 03:37 AM   #13
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Is there any other side effect of removing these fuses? I mean, any loss of performance at low RPMs, or any broken system in the car? Anything?
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      01-02-2019, 03:57 AM   #14
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Quote:
Originally Posted by Cycle Pilot View Post
I'm curious about this. I've heard another way is just disconnect the valve harnesses after stopping in Sport+.
Quote:
Originally Posted by Cycle Pilot View Post
I'm curious about this. I've heard another way is just disconnect the valve harnesses after stopping in Sport+.

This way is ok too, but is more complicated because you need to protect conectors agains mud, water etc
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      01-02-2019, 03:58 AM   #15
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Quote:
Originally Posted by mlx.milano View Post
Is there any other side effect of removing these fuses? I mean, any loss of performance at low RPMs, or any broken system in the car? Anything?
Quote:
Originally Posted by mlx.milano View Post
Is there any other side effect of removing these fuses? I mean, any loss of performance at low RPMs, or any broken system in the car? Anything?
Nothing!
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      01-02-2019, 04:54 AM   #16
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Quote:
Originally Posted by CJ41BIG View Post
Step3: pull out these 2 fuses
Thanks for the DIY

I'm assuming one fuse is [COLOR="DarkRed"]left[/COLOR] and the other one is for the [COLOR="Green"]right[/COLOR] side valve actuator?
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      01-02-2019, 05:11 AM   #17
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Quote:
Originally Posted by Poochie View Post
Quote:
Originally Posted by CJ41BIG View Post
Step3: pull out these 2 fuses
Thanks for the DIY

I'm assuming one fuse is [COLOR="DarkRed"]left[/COLOR] and the other one is for the [COLOR="Green"]right[/COLOR] side valve actuator?
Correct
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      01-02-2019, 06:39 AM   #18
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Fuse 146 and 147 are there for three things:

- valve controllers (one each fuse)
- Park Assistant
- DC/DC Converter

Since the M2C has no Parking Assitant this will be no issue.

But honestly I'm not sure if it is a smart idea to bypass the DC/DC Converter. Probably not -> https://f80.bimmerpost.com/forums/sh....php?t=1260067

That's why I stick with BimmerLink for the time being. BimmerCode won't help you with the valves and BimmerLink is not permanent. You have to have your dongle in, connected and the app running for it to work.

Sooner or later I'll probably go with the Macht Schnell EVC:

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      01-02-2019, 08:21 AM   #19
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Sorry if this was covered elsewhere on forum but - is there any way to force the car to remain in M1 or M2 mode? I have everything turned off and set to M2, it's slightly annoying to have to press it every time. I also notice if you rapidly press the button if you are impatient the screen goes completely blank.

Also - can the same be done for the button down low that tells you if you are approaching a vehicle too quickly? I have the bimmercode app if that helps...

Sorry for the side bar


Edit: I don't think you need to worry about the DC/DC converter as it's probably just for maintaining stable voltage to certain components during auto start/stop. Seeing as it is the most useless feature ever designed in a car I have it completely disabled anyway.

Quote:
The DC/DC converter is a power stabilizer to maintain constant voltage at sensitive modules during the voltage drop of the car's auto start/stop.

Last edited by Proctor750; 01-02-2019 at 08:50 AM..
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      01-02-2019, 03:14 PM   #20
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Basically everybody is interested in how the car sounds in efficient mode with the open valves.

For EU car I can give feedback... allmost 0.
For US car If somebody can give feedback it would be useful.
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      01-04-2019, 06:29 PM   #21
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Quote:
Originally Posted by ///M Houbi View Post
Fuse 146 and 147 are there for three things:

- valve controllers (one each fuse)
- Park Assistant
- DC/DC Converter

Since the M2C has no Parking Assitant this will be no issue.

But honestly I'm not sure if it is a smart idea to bypass the DC/DC Converter. Probably not -> https://f80.bimmerpost.com/forums/sh....php?t=1260067

That's why I stick with BimmerLink for the time being. BimmerCode won't help you with the valves and BimmerLink is not permanent. You have to have your dongle in, connected and the app running for it to work.

Sooner or later I'll probably go with the Macht Schnell EVC:

I'm so confused...I swear my valve stays open without the dongle plugged in and app running.

Am I crazy or is this a difference between the EU and US versions?
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      01-04-2019, 09:53 PM   #22
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Quote:
Originally Posted by CanadianDriver View Post
hjk did you try the fuse mod? how different was the sound afterwards?
No, I have not tried the fuse mod. And after reading what these two fuses serve, I'm not so sure I want to attempt this.

I would rather remove the connectors and wrap them with something waterproof instead.

Can anyone share their proper procedure to do this?
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