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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 > muffler
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      12-14-2018, 05:49 PM   #23
floridaorange
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Any 320i owners have any other suggestions to go along with the install of this magnaflow muffler? I have a 4Ē catless downpipe. Thanks
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      12-14-2018, 06:15 PM   #24
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As everyone say there no gain... just keep the original pipes and just weld the muffler. Then keep us updated on how it sound.
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      12-14-2018, 08:38 PM   #25
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Before and after - will do
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      12-20-2018, 12:10 PM   #26
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Found the muffler shop im gonna use, if it were not raining would have it done today. They offered to istall an 02 sensor spacer so hopefully no more cel (yes I have the app).
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      12-21-2018, 05:30 PM   #27
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I am noticing smoother acceleration and less deceleration when I take my foot off the gas. The gears seem to be shifting smoother with less jerkiness occurring. And even though members have said there would be no power gain but my butt dyno says otherwise. First gear / off the line speed has definitely increased a little. Iíll post a before video once I find and old one, but the cold start seems less erratic and more tuned now. Also hearing burbles, which I didnít expect tbh.

Last edited by floridaorange; 12-27-2018 at 11:38 AM.
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