Has Anyone Opened Up A Stock 550i Muffler?

Chili Palmer · 03-03-2013, 08:44 PM

As the title says, has anyone opened up a 550 muffler to see what's inside? When I had my Z06 Corvette, there were a few guys on the forum that took the stock mufflers and removed the packing and cut open one of the pipes passing through one of the chambers. It gave the car a more pronounced sound without the drone. The Z06 mufflers have the same kind of bypass valve that the 550 mufflers do.

If I can find a set of 550i mufflers cheap I'll experiment and post the results.

dell · 03-04-2013, 12:39 PM

Quote:

Originally Posted by Chili Palmer

As the title says, has anyone opened up a 550 muffler to see what's inside? When I had my Z06 Corvette, there were a few guys on the forum that took the stock mufflers and removed the packing and cut open one of the pipes passing through one of the chambers. It gave the car a more pronounced sound without the drone. The Z06 mufflers have the same kind of bypass valve that the 550 mufflers do.

If I can find a set of 550i mufflers cheap I'll experiment and post the results.

I have 2013 550i stock mufflers for sale pm me with your offer.

aus · 03-04-2013, 11:14 PM

Many people have opened up the E9x M3 cans and just wrapped the perforated holes or welded in straight pipe and it works pretty well.
Good luck with this project.

twelve535i · 03-07-2013, 07:28 PM

I think this is what aus is talking about
http://www.m3post.com/forums/showthread.php?t=609950

Someone take one for the team and give him the mufflers cheap so he can open it up and experiment

Here's a pic of a 335i muffler.
http://www.google.com/imgres?hl=en&c...&tx=702&ty=319

I think the perforated pipes are connecting the two mufflers together, so that would be missing from 550 muffler. You could definitely stright pipe the internal resonator.

mdrobc13 · 03-08-2013, 11:54 PM

I have a set also for sale. All PMs welcome.

HDEddie1 · 03-11-2013, 11:37 AM

Another poster opened up his 2007 Z4 M coupe muffler...I suspect the F10 550i muffler looks anything like this. Lots of work, for sure, but interesting project. Let us know how it goes...good luck

03-03-2013, 08:44 PM	#1
Chili Palmer Master Of My Domain 89 Rep 669 Posts Drives: 2015 650i Gran Coupe Join Date: Apr 2012 Location: SoCal iTrader: (3)	Has Anyone Opened Up A Stock 550i Muffler? As the title says, has anyone opened up a 550 muffler to see what's inside? When I had my Z06 Corvette, there were a few guys on the forum that took the stock mufflers and removed the packing and cut open one of the pipes passing through one of the chambers. It gave the car a more pronounced sound without the drone. The Z06 mufflers have the same kind of bypass valve that the 550 mufflers do. If I can find a set of 550i mufflers cheap I'll experiment and post the results. Last edited by Chili Palmer; 03-04-2013 at 12:51 AM..
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03-04-2013, 11:14 PM	#3
aus Major General 890 Rep 9,031 Posts Drives: Odysse Join Date: Jul 2005 Location: Seal Beach, CA iTrader: (10)	Many people have opened up the E9x M3 cans and just wrapped the perforated holes or welded in straight pipe and it works pretty well. Good luck with this project. __________________ Let me get this straight... You are swapping out parts designed by some of the top engineers in the world because some guys sponsored by a company told you it's "better??" But when you ask the same guy about tracking, "oh no, I have a kid now" or "I just detailed my car." or "i just got new tires."
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03-07-2013, 07:28 PM	#4
twelve535i Major 478 Rep 1,363 Posts Drives: 2015 X5 35i M Sport Join Date: Feb 2013 Location: New York iTrader: (3)	I think this is what aus is talking about http://www.m3post.com/forums/showthread.php?t=609950 Someone take one for the team and give him the mufflers cheap so he can open it up and experiment Here's a pic of a 335i muffler. http://www.google.com/imgres?hl=en&c...&tx=702&ty=319 I think the perforated pipes are connecting the two mufflers together, so that would be missing from 550 muffler. You could definitely stright pipe the internal resonator. Last edited by twelve535i; 03-07-2013 at 07:49 PM..
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03-08-2013, 11:54 PM	#5
mdrobc13 Colonel 338 Rep 2,232 Posts Drives: Made in Bavaria Join Date: Oct 2007 Location: On a base somewhere near or afar! iTrader: (8) Garage List 2021 BMW X3e [0.00] 2016 BMW M4 [9.00]	I have a set also for sale. All PMs welcome. __________________ '22 BMW M4 Comp (SSG/Black) '16 BMW M4 (Shakir Orange/Black) - gone not forgotten '15 BMW M3 (Black/Black) - gone not forgotten '10 BMW X5M (Black/Black) - gone not forgotten '08 BMW M3 (Space Gray/Black) - gone not forgotten
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03-11-2013, 11:37 AM	#6
HDEddie1 First Lieutenant 120 Rep 318 Posts Drives: X5 40i, X3M40i, Audi SQ5 Join Date: Aug 2012 Location: Las Vegas, Nevada iTrader: (0)	Maybe looks like this? Another poster opened up his 2007 Z4 M coupe muffler...I suspect the F10 550i muffler looks anything like this. Lots of work, for sure, but interesting project. Let us know how it goes...good luck Attached Images
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