Cutting open the stock muffler-Pics! - Bimmerfest - BMW Forums



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F85 X5 M and F86 X6 M (2016 - Current)
The BMW X5 M and X6 M are high-performance derivative of the X5 and X6. Introduced at the 2014 LA Auto Show and appearing in dealerships in 2015. Both modeles are powered by BMW's S63tu twin turbo charged V8 making 567 HP and 553 lb-ft of torque, the most power for any BMW xDrive vehicle.

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Old 08-02-2016, 08:31 AM
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Cutting open the stock muffler-Pics!

Hey guys and gals, had the opportunity to cut open and apart a stock F86 Muffler with only a thousand miles on it last night. I am salvaging one of the side chambers to use on my i3 REx

I had it straight piped for a while but the wife said it was slightly too loud to use with our 11 month old baby in the back seat.

Figured I would share the pics here in case anyone wanted to open up their mufflers and do some customization/dampening removal. The file names indicate what stage of the modification the pic was taken at.

Note the flaps are in the pipes without a side chamber, so removing the dampening from either the center muffler sections or the side sections will increase your volume with flaps opened or closed. Also, I was impressed that the two halves of the muffler are truly separated, there is only a small 1/2" round hole and a couple tiny holes where pieces meet that would allow any crossover.

P.S. You guys are so quiet in this subforum!
Attached Thumbnails
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Name:	Before opening.jpg
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ID:	572182   Click image for larger version

Name:	Open fiber removed.jpg
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ID:	572183   Click image for larger version

Name:	Side chamber removed.jpg
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ID:	572184   Click image for larger version

Name:	Inside Side Chamber.jpg
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ID:	572185   Click image for larger version

Name:	Side Chamber.jpg
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Size:	111.3 KB
ID:	572186  

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Last edited by God-Follower; 08-02-2016 at 08:36 AM.
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