09-11-2017, 05:01 PM | #1 |
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X5 35i msport muffler cut open
Hi guys I sold my stock muffler to a forum member and who is experimenting - thought I'd share the pic he sent me with the exhaust cut open.
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2014 X5 35i X-Drive M-Sport | MPPK | MPE | KW V3 | 22" AG M615
2011 e92 335i M-Sport | Cobb V3 | Alpina Flash | Injen Intake | PE Mod | Mishimoto FMIC | ER Chargepipe | ST Coilovers | 19" BBS CH-R | Arkym Front Lip | MP Style Trunk Spoiler |
09-11-2017, 05:27 PM | #3 |
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This is what the welder and I came up with. With the 3" inlet, we made the air flow more toward the exit with the valve. we left the perforated section on the valve side so that I didn't overheat the valve gaskets causing them to deteriorate and rattle.
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surfcali245.00 OFFWHITEX5325.50 |
09-11-2017, 05:29 PM | #4 |
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Videos??? Thanks again for sending the opened up muffler.
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2014 X5 35i X-Drive M-Sport | MPPK | MPE | KW V3 | 22" AG M615
2011 e92 335i M-Sport | Cobb V3 | Alpina Flash | Injen Intake | PE Mod | Mishimoto FMIC | ER Chargepipe | ST Coilovers | 19" BBS CH-R | Arkym Front Lip | MP Style Trunk Spoiler |
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09-11-2017, 05:31 PM | #5 |
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I haven't had a chance to take a video of the exhaust sound, but with the valve open, it sounds pretty much like the MPE. With the valve closed, it's very quiet. If I want the burble and the pop, I just use the BimmerLink app to keep the exhaust valve open.
This solves the issue of having a quiet car when the wife/ girlfriend is in the car and having a pretty nice sounding exhaust when the significant other is not in the car. |
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OFFWHITEX5325.50 vympel77731.00 |
09-11-2017, 05:34 PM | #6 |
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Thank you for selling me the stock exhaust.
While we had the exhaust off, I revved the car to see how loud the sound is, and it's not too loud. So, when you asked me if you can make the exhaust louder, I think the only solution is a hi-flow catted downpipe or a catless downpipe... I will try to get a video up within the next couple of days. |
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09-11-2017, 05:41 PM | #7 | |
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Quote:
The fiberglass packed section mutes the exhaust amazingly well and the chamber next to it acts as a resonator. It's quite amazing how much this whole setup mutes the sound of the exhaust noise. The only way to get the burble and the pop was to pretty much straight pipe the exhaust with about a 2" circular cutout of the pipe where the original bend was. |
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09-11-2017, 11:37 PM | #9 |
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If the car automatically closes the valve when it is at highway speeds and low rpm, there is absolutely no drone. If I use bimmerlink to force the valve open at all rpm, there is very slight droning at around 2k to 2.2k rpm
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09-11-2017, 11:54 PM | #10 |
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Very cool. Wouldn't the remote controlled cutout flaps that are so readily available have been easier and with similar effect? I'm very tempted to go that route on my 50i.
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09-12-2017, 12:11 AM | #11 |
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what is your cost for doing this? could you record a video?
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09-12-2017, 09:12 AM | #12 | |
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The cost is quite low IMO... $450 is their price Last edited by tazma61; 09-13-2017 at 03:56 PM.. |
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09-12-2017, 09:47 AM | #13 |
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Thanks! I have no storage space to keep OEM mufflers so this would be a great option.
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09-12-2017, 03:53 PM | #14 |
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Last edited by tazma61; 09-12-2017 at 04:11 PM.. |
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09-12-2017, 04:23 PM | #16 |
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that sounds great!
where in socal are you located? |
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09-12-2017, 04:35 PM | #17 |
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09-12-2017, 05:44 PM | #20 |
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