Someone posted that you can remove the exhaust valve fuses/ to get the car sounding a little better as in initial start up (my mufflers do not have any valve flap)?

What engine do you have? The 6 cyl N55 & 8 cyl N63/N63TU have exhaust flaps…not sure about the diesel engine. Here’s a diagram for the N55:

The fuse index found in the rear fuse box has 3 distinct areas. The upper left is the fuse index that uses icons next to the fuse numbers that control that function…the upper right side shows the front & rear fuse boxes and the location of the numbered fuses…and the bottom left/right sides of the fuse index lists the fuse’s number and amperage.

The icons used on the index are the same ones used in the owners manual and on the buttons and switches around the car.

The fuse for the exhaust flap is F135.

 

WOW!! Thank you. However the card I have (from the rear fuse block) doesn't have any icons. Only the number and amp. Such as what's indicated blow the pictures in the example you provided. Without an icon to go by, it's difficult for me to understand the function of a particular fuse. Thank you again.

 

Without an icon to go by, it's difficult for me to understand the function of a particular fuse.

Even with the icons, I still stumble on understanding a few of them or at least like to have confirmation.

Here's a couple links for BMW Symbol Meanings as well to help if you need (One BF Member actually put together a pdf in last link below).

BMW BMW fuse symbols meaning and guide (1975-2023) fuse box diagrams & schemes - imgVEHICLE.com

imgvehicle.com

BMW - Fuse box diagram

NEED HELP - BMW Symbols

All, I am on a mission to understand the fuse symbols for my BMW. I have a good start, but I've found very little information in general. Anyone know further insights?? See my attachment and match the numbers to the symbols then add your insights. I will compile these into a comprehensive...

www.bimmerfest.com

 

Thank you. I have the N65 3.0l turbo engine. I the diagram of the exhaust you sent looks similar to
mine. Is there a way to disable the exhaust flap as indicated on the illustration without causing a light to come on or driveability concerns?
thank you very much!

 

I've used Bimmerlink to disable exhaust flap just for fun and to check it out. The car will revert back to normal setting once you turn off ignition.

Is there a way to disable the exhaust flap as indicated on the illustration without causing a light to come on or driveability concerns?

I dunno at ways of achieving via pulling fuses. Not the kind of "cup o' tea" for my personal tastes.

 

*N55 engine. Thank you very much for this great and detailed information. It’s so great that we can depend on this forum for answers/fix’s for our beloved Beemers!!!

 

N55 engine. Thank you very much for this great and detailed information. It’s so great that we can depend on this forum for answers/fix’s for our beloved Beemers!!!

Bimmers. And I agree 100% - this forum is great for answers/fix's and the occasional laugh.
I especially enjoy @QSilver7 posts. That guy is a WEALTH of information!

 

He sure is!! And I thank him (and all) very much!!

 

You can code the exhaust flap to remain permanently open!

 

I have a Carly OBD11 unit I’ve been using (and a good snap-on scanner)… not sure they can actually code the system. However, on the Carly it does say to open exhaust flaps but I would need to leave the unit plugged into the OBD. Not sure.
Thank you!!

 

Oh and yes…. I absolutely LOVE my 640iCG with the M sport. Would not let her go for anything!! I’ve had 3 and 5 series (still have my E90) cars but my 6CG is “da bomb”!!!

 

Sorry, one more question. I checked at the rear silencers (both of them) and I do not see/have this exhaust flap valve anywhere on them (top or bottom). Would this controller be pre-cat by chance?
Thank you!!

 

Just an FYI that explains the purpose/function of the exhaust flap (to those that may be curious);

 

WOW!! Thank you again. Perhaps its on the silencer in the center of the exhaust system (I do have the M sport package). I have looked all around both rear units and there is no valving/electronics.(my car is a 640i N55 6cyl turbo GC with M sport). I'll keep looking. I greatly appreciate this information - Thank you!!!

 

Which exhaust setup do you have? Is it the single round tail pipe on each side, or do you have a single round tail pipe on one side, or do you have the trapezoidal shaped tail pipes on each side that has two exhaust pipes when you look into the end?

 

640i models have the two pipes one each side and the exhaust flap is on the drivers side (well at least in UK) it automatically operates in sports mode and in EcoPro mode that is why Eco pro mode sounds burbler when pushed.

 

Thanks for the location confirmation…based on your description…the exhaust flap is located in the right exhaust pipe.

 

Thank you. I have dual exit exhausts, with a single round pipe. Thank you again!!

 

 

 

Here are a few pictures of my exhaust system.
Thank you!!

 

Hello;
To further our discussion, I have been all over the underneath of my 640iGC. There are no visible signs of exhaust flaps or any type of exhaust restriction. There is the Cat (at the engine), and a single silencer/muffler in the center of the chassis with two exhaust pipes going through, and then finally the two end mufflers. Pulling the F135 fuse changed nothing (in terms of the sound). However, when first started the exhaust sound is remarkable. When my car warms up, I cannot seem to duplicate the sound (manually).