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BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST > Technical Forums > N20, N26, B46, B48 Turbo Engine / Drivetrain / Exhaust Modifications > How to remove muffler drone!
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      07-08-2019, 05:05 PM   #1
brianpalvarez
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Exclamation How to remove muffler drone!

F30 Fam,

Here is how I modified that ugly, annoying drone sound from my muffler. This idea came from my local muffler shop, thank you Crown Auto in Glendora! Genius, inexpensive quick mod! Hope you enjoy!

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      07-08-2019, 05:30 PM   #2
RMachuca3d
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      07-09-2019, 08:39 AM   #3
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Install Helmholtz chamber
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      07-09-2019, 11:59 AM   #4
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Can you post a pic of what your exhaust looks like now?
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      07-09-2019, 12:38 PM   #5
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Spends time to edit the video and we donít even get a before and after sound clip crazyyyy lol
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      07-09-2019, 04:15 PM   #6
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Quote:
Originally Posted by sspade View Post
Can you post a pic of what your exhaust looks like now?
http://www.zrxoa.org/forums/attachme...3&d=1385102874


Google search for:
1/4 wave resonator
J-pipe
Helmholtz chamber
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      07-11-2019, 11:17 AM   #7
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Here you go! Pictures of my Jpipe

20190711_085516 by Brian Alvarez, on Flickr

20190711_085406 by Brian Alvarez, on Flickr
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sspade1465.50

      07-11-2019, 04:48 PM   #8
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Measurements would be helpful to those wishing to duplicate your setup.
Specifically the length of the J Pipe.
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      07-15-2019, 05:24 PM   #9
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Quote:
Originally Posted by CandyRedRC46 View Post
Measurements would be helpful to those wishing to duplicate your setup.
Specifically the length of the J Pipe.
I would call my shop and ask them that you saw my video, ask for Ernie here is their number: (626) 665-0974
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      07-16-2019, 07:17 AM   #10
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Quote:
Originally Posted by brianpalvarez View Post
I would call my shop and ask them that you saw my video, ask for Ernie here is their number: (626) 665-0974
https://www.google.com/imgres?imgurl...act=mrc&uact=8
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