Trying to get my exhaust flap to open.

[Installsplus]

I've tried everything and can't get it to open. Doesn't open when in sport mode when idling Does it only open when it's under hard acceleration? Hopefully the dealer can manually open and close it and diagnose if the actuator is functioning properly. Not sure if it's faulty.

[turboawd]

it opens above a certain rpm and engine load. and is closed for more backpressure at lower rpms, which improves torque.

[Installsplus]

Originally Posted by turboawd

it opens above a certain rpm and engine load. and is closed for more backpressure at lower rpms, which improves torque.

So at idle it will never open? Trying to get it to open so I can disconnect the connector and compare sound quality until I save some$$$ for a mpe.

[Installsplus]

Originally Posted by turboawd

it opens above a certain rpm and engine load. and is closed for more backpressure at lower rpms, which improves torque.

So at idle it will never open? Trying to get it to open so I can disconnect the connector and compare sound quality until I save some$$$ for a mpe.

[dtronics]

Yes, the dealer should be able to open the flaps. I have an OBDII CAN flap module for works on all F Series. I have it installed on my car and I can open/ close the flaps whenever.

http://www.burgertuning.com/f_series...odule_BMW.html

[Installsplus]

Originally Posted by dtronics

Yes, the dealer should be able to open the flaps. I have an OBDII CAN flap module for works on all F Series. I have it installed on my car and I can open/ close the flaps whenever.

That's a great idea. I noticed u can get an app bootmod3 which also allows you to do all of that indcluding trouble shooting.

[dtronics]

Originally Posted by Installsplus

That's a great idea. I noticed u can get an app bootmod3 which also allows you to do all of that indcluding trouble shooting.

I haven't heard anything about the app but a lot of the guys on the F8X forums use that CAN Flap module. It's actually pretty cool and can delete codes, brighten LED's, etc.

I updated my last post with the link for it. It's a little expensive but it works perfect.

[Installsplus]

Originally Posted by dtronics

I haven't heard anything about the app but a lot of the guys on the F8X forums use that CAN Flap module. It's actually pretty cool and can delete codes, brighten LED's, etc.

I updated my last post with the link for it. It's a little expensive but it works perfect.

That's awesome i just watched all the videos posted on the link u shared. Smart guy!! It is a bit pricey. I may have to monitor when the valve opens and pull the connector. Don't want to pull the u shape pin between the exhaust and actuator it causes a horrible rattle. I just hope I don't loose power and get bad gas mileage.

[dtronics]

Originally Posted by Installsplus

That's awesome i just watched all the videos posted on the link u shared. Smart guy!! It is a bit pricey. I may have to monitor when the valve opens and pull the connector. Don't want to pull the u shape pin between the exhaust and actuator it causes a horrible rattle. I just hope I don't loose power and get bad gas mileage.

Yeah, it's pretty cool. You can find a used one in the classifieds for $150-200 if you decided to go that route. There was actually two separate ads that just sold but they pop up all the time.

http://f80.bimmerpost.com/forums/forumdisplay.php?f=621

[Installsplus]

Originally Posted by dtronics

Yeah, it's pretty cool. You can find a used one in the classifieds for $150-200 if you decided to go that route. There was actually two separate ads that just sold but they pop up all the time.

http://f80.bimmerpost.com/forums/forumdisplay.php?f=621

Thanks. ?

[artem123]

My little 2 cents. On a turbo cars flap placement is a very fine piece of engineering. It creates some back pressure to spin turbo. Because as we all know from Jeremy Clarcson "Exhaust gasses go into the turbocharger and spin it, witchcraft happens, and you go faster". By opening a flap when you do not need to you will loose its witchcraft, and WILL lose low RPM torque. Of course, there is way more scientific explanation for all of this, but i will stop )))

[IvanLZ]

Originally Posted by artem123

My little 2 cents. On a turbo cars flap placement is a very fine piece of engineering. It creates some back pressure to spin turbo. Because as we all know from Jeremy Clarcson "Exhaust gasses go into the turbocharger and spin it, witchcraft happens, and you go faster". By opening a flap when you do not need to you will loose its witchcraft, and WILL lose low RPM torque. Of course, there is way more scientific explanation for all of this, but i will stop )))

True. I've read many people experiencing the low rpm torque and end up closing the flap again.

[Installsplus]

Originally Posted by artem123

My little 2 cents. On a turbo cars flap placement is a very fine piece of engineering. It creates some back pressure to spin turbo. Because as we all know from Jeremy Clarcson "Exhaust gasses go into the turbocharger and spin it, witchcraft happens, and you go faster". By opening a flap when you do not need to you will loose its witchcraft, and WILL lose low RPM torque. Of course, there is way more scientific explanation for all of this, but i will stop )))

Makes sense I pulled the pin out last night so not sure if I put it back in the right place anyone have pics. I will take some later when I get home.

[Installsplus]

Originally Posted by artem123

My little 2 cents. On a turbo cars flap placement is a very fine piece of engineering. It creates some back pressure to spin turbo. Because as we all know from Jeremy Clarcson "Exhaust gasses go into the turbocharger and spin it, witchcraft happens, and you go faster". By opening a flap when you do not need to you will loose its witchcraft, and WILL lose low RPM torque. Of course, there is way more scientific explanation for all of this, but i will stop )))

I understand the design but I don't understand why the mpe doesn't come with flaps. Isn't it the same?

[vympel777]

Guys can someone tell me.which pin do i need to pull in the trunk ? A pic would be great lol

[Wavy]

Originally Posted by Installsplus

I understand the design but I don't understand why the mpe doesn't come with flaps. Isn't it the same?

Someone posted some literature awhile ago saying the flap is only for sound. Wish I saved it.

[Installsplus]

Originally Posted by vympel777

Guys can someone tell me.which pin do i need to pull in the trunk ? A pic would be great lol

U can't do anything ur only option is to buy the wireless vlink adapter purchase the bimmerlink app and then you have the option of opening and closing the exhaust flap electronically.

[DonJuan]

Originally Posted by Installsplus

U can't do anything ur only option is to buy the wireless vlink adapter purchase the bimmerlink app and then you have the option of opening and closing the exhaust flap electronically.

Sorry to revive old post.
I've got Bimmerlink and when I tap the valve open switch, the valve opens no prob. But it seems like it closes again when I turn the car off.
I thought that if you set it to open via Bimmerlink, it would stay open until you set it back to auto?

Anyone?

[Installsplus]

Originally Posted by DonJuan

Sorry to revive old post.
I've got Bimmerlink and when I tap the valve open switch, the valve opens no prob. But it seems like it closes again when I turn the car off.
I thought that if you set it to open via Bimmerlink, it would stay open until you set it back to auto?

Anyone?

I fixed that issue with a m performance exhaust. An expensive problem solved.

[Ferg]

Originally Posted by DonJuan

Sorry to revive old post.
I've got Bimmerlink and when I tap the valve open switch, the valve opens no prob. But it seems like it closes again when I turn the car off.
I thought that if you set it to open via Bimmerlink, it would stay open until you set it back to auto?

Anyone?

No, system resets once the car is turned off. You have to open the app each time.

[DonJuan]

Originally Posted by Ferg

No, system resets once the car is turned off. You have to open the app each time.

Bummer. Thanks for clarifying, I wish Bimmerlink would make it more clear on their website.

[DonJuan]

Originally Posted by artem123

My little 2 cents. On a turbo cars flap placement is a very fine piece of engineering. It creates some back pressure to spin turbo. Because as we all know from Jeremy Clarcson "Exhaust gasses go into the turbocharger and spin it, witchcraft happens, and you go faster". By opening a flap when you do not need to you will loose its witchcraft, and WILL lose low RPM torque. Of course, there is way more scientific explanation for all of this, but i will stop )))

Probably is more critical for turbocharged engines, but is not exclusive to those. I've had M54 powered cars in the past and both had the valve.