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M2 Technical Topics > N55 Engine / Drivetrain / Exhaust / Bolt-ons / Tuning > DIY: M Performance exhaust

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      10-18-2019, 12:43 AM   #89
mdriver83
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Quote:
Originally Posted by m2ruder View Post
there is a whole dummy plug/routing doc:

https://bmweba.com/eba-01-29-2-412-923/

As for cutting, who knows why they design it that way. Maybe for ease & speed of install at the port? Who knows.......
Hey, could you help me with this?
I can't find this doc anymore, what are you doing with the dummy?

THX!
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      10-19-2019, 11:46 PM   #90
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If anyone is looking for sound clips of the M Performance Exhaust, I just filmed and posted a video, check it out!

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      11-03-2019, 06:25 AM   #91
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Quote:
Originally Posted by mdriver83 View Post
Hey, could you help me with this?
I can't find this doc anymore, what are you doing with the dummy?

THX!
unfortunately after almost 2 years I have purged files and all the M4/M2 stuff is gone. Sorry
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      12-03-2019, 09:47 AM   #92
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Can someone tell me if the MPE does make more noise than the stock exhaust when the valves are closed? I like it when the car makes more sound for the funny racy moments, but i do'nt like that much sound when comming home or leaving home :-)
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      12-03-2019, 12:21 PM   #93
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Originally Posted by dv-s View Post
Can someone tell me if the MPE does make more noise than the stock exhaust when the valves are closed? I like it when the car makes more sound for the funny racy moments, but i do'nt like that much sound when comming home or leaving home :-)
It is noticeably louder than OEM.
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      12-03-2019, 01:41 PM   #94
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Can someone tell me if the MPE does make more noise than the stock exhaust when the valves are closed?
The MPE is louder, and brighter. The stock exhaust is quieter, but also warmer. There are multiple videos online that show this, just do a YouTube search.

One of the things I hate about a lot of the M2 aftermarket exhaust options is how raspy, and bright they make the sound.
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      12-03-2019, 04:46 PM   #95
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Anyone have the instructions for wiring the new valve in? Can't seem to find them online or in this thread since the links are deleted.
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      12-11-2019, 06:59 PM   #96
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Anyone have the instructions for wiring the new valve in? Can't seem to find them online or in this thread since the links are deleted.
Found the instructions but have another question which may be stupid. Did you guys all remove this metal bracket holding the two pipes together? It seems like it could be a source of vibration, maybe those of you with vibration issues check it? The original DIY shows it as still on but the below DIY video shows it removed (got to 9:14-15). Wasn't sure if it was just a shipping bracket or something structural.




Last edited by Mosely; 12-11-2019 at 07:29 PM..
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