01-08-2019, 03:32 PM | #89 |
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I also have the cold start tinning sound on cold start for about 5-10 seconds. I ensured all my CF tips were pushed in and seated correctly. I also noticed the bracket between the tailpipes had a tiny gap on one side. I removed the bracket and the sound was resolved. After some research online I've seen some exhaust with them and some with out?? I dont see the need for them as the structure between the tailpipes is quite sturdy. Are these necessary clamps considering some come with it and some dont or are they a fixture from the company who makes these exhaust?
Just my experience with this issue. Any help would be greatly appreciated! Last edited by Mykimikes; 01-08-2019 at 03:38 PM.. Reason: add picture |
01-09-2019, 07:37 AM | #90 | |
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I think the brackets are part of the newer versions of the MPE. Part nr '18302412432' doesn't seem to have this where part nr. '18302454297' does. Maybe they're using the brackets to fix the 'shaking/wobbling' issue of the exhaust tips during startup of the 1st iteration. |
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01-09-2019, 01:14 PM | #91 | |
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01-17-2019, 11:24 PM | #93 |
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MPE replaced
Waiting to receive my car with a new MPE installed. After 2 visits they decided to replace my MPE. After reading previous posts in this thread I am already considering my options if the new exhaust makes the same vibration noise during cold starts. Has anyone had the welding job done by their dealership?
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01-28-2019, 11:58 PM | #94 |
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04-24-2019, 05:26 PM | #96 |
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Had the dealer install a brand new MPE exhaust on my 2017 m2. I ordered the CF tips separately and just installed them today, a few weeks after the original install of the MPE.
Massive rattle, where none was perceived before the installation of the tips. It is almost as if the extra weight at the end of the exhaust causes a strange frequency to occur. Additionally, the tips are not well aligned (I ensured they were properly seated), and the inner tips stick out past the diffuser. Does this sound like the dealer didn't install this exhaust correctly? |
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04-25-2019, 01:48 AM | #97 |
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I fixed the rattle on my MPE with:
- Unscrew tips - Use a rubber hammer to make sure they're as far back as possible - Screw tips tighter than stock spec I've seen somewhere that someone uses some sort of tape between the exhaust and the tips, that could also help. |
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04-25-2019, 04:02 AM | #98 | |
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04-25-2019, 09:04 AM | #99 | |
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04-25-2019, 07:01 PM | #101 | |
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Drives: 2018 BMW M2 | LBB | MT
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Problem is, that the solution above can lead to tips sticking out differently from left to right, see my post: https://f87.bimmerpost.com/forums/sh...5&postcount=82 Still absolutely love it, but the metallic rattle is annoying during the cold start, just sounds "wrong". Last edited by Downunder99; 04-25-2019 at 07:07 PM.. |
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04-25-2019, 07:42 PM | #102 |
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04-26-2019, 06:31 PM | #103 | |
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-Mark |
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04-26-2019, 09:13 PM | #104 |
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I had this problem with my stock exhaust. Rattle would go away when warm then became constant.
https://www.bimmerpost.com/forums/sh...php?p=23704116 |
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05-12-2019, 12:43 PM | #105 | |
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What's the difference between the two versions, does anyone know? |
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05-12-2019, 01:32 PM | #106 | |
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12-16-2019, 05:42 AM | #107 |
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I took the car to my dealer last week to get the rattling resolved. They replaced the 4 carbon tips for new ones, but they still rattle. Yesterday I placed some aluminum tape on the exhaust, but it didn't help. I guess it's not thick enough to make a difference.
I guess I'll ask my dealer to replace the tips again, but this time for the newer style tips (part number 18302468411). These tips are shorter and have a different mounting mechanism (a clamp instead of a single screw). View post on imgur.com Not sure if these fit the MPE tho. |
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12-16-2019, 10:37 AM | #108 | |
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https://f87.bimmerpost.com/forums/sh....php?t=1677945 |
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12-16-2019, 12:26 PM | #109 | |
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12-17-2019, 05:28 PM | #110 |
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Took mine into the dealership a few months ago for this. The rattle was inside the muffler itself. They replaced it for me and the rattle went away.
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