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M2 Technical Topics > N55 Engine / Drivetrain / Exhaust / Bolt-ons / Tuning > MPE not installed properly, now dinged.

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      02-08-2017, 09:11 AM   #1
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MPE not installed properly, now dinged.

As I lifted my car to change the wheels, I noticed this. Took it to the dealership yesterday and today they called back and told me it was "done". When I asked for more details, the representative speaking to me wasn't aware of what the mechanic/garage did. I'm going tomorrow to see what they did.

The flow is definitely messed up by now and this has to be exchanged. My question is, is this part of the MPE or is the MPE just the catback and this is a stock pipe which they have in stock maybe? I'm expecting tomorrow they tell me we just tightened it and it's okay now. I will insist on exchanging either the full exhaust or just this pipe if it's not part of the MPE.






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      02-08-2017, 11:48 PM   #2
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Nothing?
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      02-09-2017, 01:10 AM   #3
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After the clamp is MPE. Before is stock front pipe. Hope it helps.

BTW, in your first video, what's causing the pipe to hit the plate automatically? I didn't think someone is pushing gas pedal from the sound.
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      02-09-2017, 08:31 AM   #4
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This is actually a design flaw of mpe. Nth can be done about it. You see there are only 2 hangers for mpe and is apparently not enough to hold the pipe. The pipe will drop to the metal plate underneath as shown in your first video.This causes a vibration noise inside the car when cold start as the pipe hit the underneath metal plate. I guess that's one of the reason they are now making mpe version 2.
Wt my shop did is to push the pipe in a bit further so the metal plate will fit the hollow part of the pipe better. So far no more vibration noise for me.
For you second video just tighten the cf tip more. That will do
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      02-09-2017, 08:44 AM   #5
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That is why Akrapovic uses the mounting points aimed for the M3/M4 exhaust (and other?) too... No rattle.
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      02-09-2017, 12:45 PM   #6
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Quote:
Originally Posted by Bmwbb View Post
This is actually a design flaw of mpe. Nth can be done about it. You see there are only 2 hangers for mpe and is apparently not enough to hold the pipe. The pipe will drop to the metal plate underneath as shown in your first video.This causes a vibration noise inside the car when cold start as the pipe hit the underneath metal plate. I guess that's one of the reason they are now making mpe version 2.
Wt my shop did is to push the pipe in a bit further so the metal plate will fit the hollow part of the pipe better. So far no more vibration noise for me.
For you second video just tighten the cf tip more. That will do
Someone should complain to them:

https://redarcheng.co.uk/news/bmw-m2...duction-ramps/
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      02-09-2017, 01:28 PM   #7
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this pre revised exhaust is crap. watch the exhaust tips



they're releasing a new one in March i think. replace it with that one.
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      02-09-2017, 04:56 PM   #8
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First the cracking MPE for E92 M3, and now this. M Performance parts were supposed to be OEM quality, but their design team is a joke. I wonder what hacks they outsourced it to.
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      02-09-2017, 06:46 PM   #9
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The ding or recess in the pipe, you are referring to, is there by design, it's not damaged. There is nothing wrong with the exhaust, but the installation... well that's just another story. Take it back to the dealer and get it fixed, looks like a 10 year old installed it. The exhaust should be rock solid, I have no issues with mine at all.
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      02-10-2017, 01:28 AM   #10
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i only have 130 miles on my car but the MPE was port installed and has been rock solid for 2 weeks. No rattles, no issues. I wasn't able to confirm anything regarding a new version for March with anyone at my dealership.
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      02-11-2017, 05:28 AM   #11
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So the dealer is insisting that there is nothing wrong with the exhaust and they just put it back in place. Should I insist on getting it replaced? I believe this will affect the airflow and probably performance right? Please see video to see the ding. I'm back at the service center now and insisted that the mechanic take another look so I can show him what I mean.

Thoughts? Should I let this go?
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      02-11-2017, 05:34 AM   #12
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Did you read the comments? It is supposed to that the indentation. It should be hung a little better though.
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      02-11-2017, 06:38 AM   #13
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Quote:
Originally Posted by MYK View Post
So the dealer is insisting that there is nothing wrong with the exhaust and they just put it back in place. Should I insist on getting it replaced? I believe this will affect the airflow and probably performance right? Please see video to see the ding. I'm back at the service center now and insisted that the mechanic take another look so I can show him what I mean.

Thoughts? Should I let this go?
As other people here are saying, it is designed that way.

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      02-11-2017, 05:01 PM   #14
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Quote:
Originally Posted by metrickid View Post
As other people here are saying, it is designed that way.

Yep. Even Akra has dents in it for fitment.
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      02-18-2017, 09:37 PM   #15
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I have worked out a possible solution with my garage. They are going to weld another "hangers" to my exhaust to see if that works. Will let you guys know later.
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      03-04-2017, 12:16 AM   #16
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Good news. After 2 weeks of testing there is no more vibration inside car after welding!! At the end we didn't weld a new "hangers" but instead weld the connection between the mp pipe and original pipe. The downside is if I wanna change to other exhaust in the future we will have to cut the pipe. Will upload photo later to show the position we weld.
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      04-03-2017, 10:12 PM   #17
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Wire installation

I have a question for the MPE wire installation.From MPE unboxing image, I only see two cables go to the left and right actuators. But what about OEM wire which located in the driver's side, How will this wire go?
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