MPE Exhaust rattle at cold startup

thestimp · 01-07-2020, 11:14 AM

Does anyone else with the MPE have a loud metal rattle on cold start? I'm guessing this could be related to cracking or bad mounting. If anyone has had this... any remedies?

CanAutM3 · 01-07-2020, 12:39 PM

Indeed, a rattling MPE on cold start is a telltale sign of a cracked MPE

tom @ eas · 01-07-2020, 01:33 PM

Quote:

Originally Posted by thestimp

Does anyone else with the MPE have a loud metal rattle on cold start? I'm guessing this could be related to cracking or bad mounting. If anyone has had this... any remedies?

We've seen issues with the tips themselves on a few occasions (carbon version). you'll have to get underneath and see what's going on during cold start.

ssgm1x · 01-07-2020, 03:50 PM

My MPE used to rattle at coldstart. It was the Exhaust Tips rattling. I have since fixed the rattle.

lgiambalvo540 · 01-07-2020, 04:19 PM

Quote:

Originally Posted by thestimp

Does anyone else with the MPE have a loud metal rattle on cold start? I'm guessing this could be related to cracking or bad mounting. If anyone has had this... any remedies?

Mine did that too. It was cracked. BMW replaced it with the V2 version.

thestimp · 01-07-2020, 08:52 PM

I have the carbon tipped version, I guess I'll get my ass under it tomorrow morning and suffer a little brain damage to check for cracks. Without checking I'm going to guess its the pipe welds to the muffler.

thestimp · 01-07-2020, 08:52 PM

Quote:

Originally Posted by ssgm1x

My MPE used to rattle at coldstart. It was the Exhaust Tips rattling. I have since fixed the rattle.

Was there a trick or you had it fixed under warranty? When I looked it was shaking pretty hard I was thinking maybe another hanger or dampener to reduce the vibrato.

ssgm1x · 01-07-2020, 10:10 PM

Quote:

Originally Posted by thestimp

Quote:

Originally Posted by ssgm1x

My MPE used to rattle at coldstart. It was the Exhaust Tips rattling. I have since fixed the rattle.

Was there a trick or you had it fixed under warranty? When I looked it was shaking pretty hard I was thinking maybe another hanger or dampener to reduce the vibrato.

Yes. I removed my M Performance Carbon tips and went with Aftermarket MP Carbon tips since the originals were so dull and ugly. And guess what...no more vibrations / rattling on cold-start. Problem fixed. Before and After Pics.

thestimp · 01-07-2020, 10:19 PM

Quote:

Originally Posted by ssgm1x

Yes. I removed my M Performance Carbon tips and went with Aftermarket MP Carbon tips since the originals were so dull and ugly. And guess what...no more vibrations / rattling on cold-start. Problem fixed. Before and After Pics.

thats amazing, I hope I'm this lucky...I'll report back in the morning.

BMW4Joe · 01-08-2020, 01:38 AM

Quote:

Originally Posted by ssgm1x

Quote:

Originally Posted by thestimp

Quote:

Originally Posted by ssgm1x

My MPE used to rattle at coldstart. It was the Exhaust Tips rattling. I have since fixed the rattle.

Was there a trick or you had it fixed under warranty? When I looked it was shaking pretty hard I was thinking maybe another hanger or dampener to reduce the vibrato.

Yes. I removed my M Performance Carbon tips and went with Aftermarket MP Carbon tips since the originals were so dull and ugly. And guess what...no more vibrations / rattling on cold-start. Problem fixed. Before and After Pics.

Hello. Looks shiny & I like it. Wondering about how did u replace it? Thanks.

thestimp · 01-08-2020, 02:28 PM

I had no cracks, looks like a small repair. Seems my end pieces are shaking so I'm going to secure and dampen it as best i can with another hanger and rubber.

Kilabyte · 01-09-2020, 11:36 AM

My V1 rattled on cold starts when it developed cracks

papasmurf_m3 · 08-23-2020, 03:39 PM

No cracks on my V1 I guess. My car is 2016 optioned from factory.

It makes that vibrating noise for a brief few seconds at cold start.

Tips vibrate for a few seconds at cold start. After that nothing. Im going to try the new set screws mentioned in another thread. Hopefully I the stock screws don't strip when I remove them.

Anyone know what size the set screws are? Do you need to drop the muffler to remove the tips?

Any help much appreciated!

1dopef80 · 06-22-2023, 12:20 PM

Quote:

Originally Posted by ssgm1x

Yes. I removed my M Performance Carbon tips and went with Aftermarket MP Carbon tips since the originals were so dull and ugly. And guess what...no more vibrations / rattling on cold-start. Problem fixed. Before and After Pics.

Hey I’m having the same issue can u send me link to these tips u bought thanks

xfan1213 · 06-23-2023, 03:39 PM

Is V1 covered by warranty if it cracked? Can I just go to any dealer to have them replace it?

aliiin · 06-23-2023, 03:56 PM

Also check your exhaust valve actuators, I had one go bad and it’s a cheap fix.

mdlex389 · 06-24-2023, 08:18 PM

I am having the same issue. For reference, I have the v1 that cracked, then welded with the noise starting not long after the welding. I have had the car checked a couple of times and no one has been able to figure it out. Subscribed.

01-07-2020, 11:14 AM	#1
thestimp Lieutenant Colonel 986 Rep 1,709 Posts Drives: 22 X3MC MBB - C-17 Globemaster Join Date: Jun 2014 Location: Pittsburgh, PA iTrader: (1) Garage List 2022 X3mC [10.00] 2016 BMW M3 [0.00]	MPE Exhaust rattle at cold startup Does anyone else with the MPE have a loud metal rattle on cold start? I'm guessing this could be related to cracking or bad mounting. If anyone has had this... any remedies?
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01-07-2020, 12:39 PM	#2
CanAutM3 General 21131 Rep 20,742 Posts Drives: 2021 911 turbo Join Date: Jan 2012 Location: Montreal iTrader: (1) Garage List 2022 Audi RS6 [10.00] 2021 Porsche 911 turbo [10.00]	Indeed, a rattling MPE on cold start is a telltale sign of a cracked MPE __________________ Porsche 911 turbo 2021 992 GT Silver Previous cars: M4cs 2019 F82 Limerock Grey / M4 2015 F82 Silverstone / M3 2008 E92 Silverstone / M3 2002 E46 Carbon Black
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01-07-2020, 03:50 PM	#4
ssgm1x Captain 419 Rep 771 Posts Drives: 2020 M340i & 2018 M3 Join Date: Aug 2017 Location: Cherry hill ,NJ iTrader: (0)	My MPE used to rattle at coldstart. It was the Exhaust Tips rattling. I have since fixed the rattle. __________________ 2020 BMW M340ix Dravit Grey 2018 BMW M3 Alpine White
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01-07-2020, 08:52 PM	#6
thestimp Lieutenant Colonel 986 Rep 1,709 Posts Drives: 22 X3MC MBB - C-17 Globemaster Join Date: Jun 2014 Location: Pittsburgh, PA iTrader: (1) Garage List 2022 X3mC [10.00] 2016 BMW M3 [0.00]	I have the carbon tipped version, I guess I'll get my ass under it tomorrow morning and suffer a little brain damage to check for cracks. Without checking I'm going to guess its the pipe welds to the muffler.
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01-08-2020, 02:28 PM	#11
thestimp Lieutenant Colonel 986 Rep 1,709 Posts Drives: 22 X3MC MBB - C-17 Globemaster Join Date: Jun 2014 Location: Pittsburgh, PA iTrader: (1) Garage List 2022 X3mC [10.00] 2016 BMW M3 [0.00]	I had no cracks, looks like a small repair. Seems my end pieces are shaking so I'm going to secure and dampen it as best i can with another hanger and rubber.
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01-09-2020, 11:36 AM	#12
Kilabyte I'm Batman! 3949 Rep 1,477 Posts Drives: Mineral White M3 6MT Join Date: Jun 2019 Location: Massachusetts iTrader: (1)	My V1 rattled on cold starts when it developed cracks __________________ S55, 2JZ, M48.00
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08-23-2020, 03:39 PM	#13
papasmurf_m3 Captain 455 Rep 844 Posts Drives: YMB F80 M3 Join Date: Apr 2019 Location: LA iTrader: (0)	No cracks on my V1 I guess. My car is 2016 optioned from factory. It makes that vibrating noise for a brief few seconds at cold start. Tips vibrate for a few seconds at cold start. After that nothing. Im going to try the new set screws mentioned in another thread. Hopefully I the stock screws don't strip when I remove them. Anyone know what size the set screws are? Do you need to drop the muffler to remove the tips? Any help much appreciated! __________________ 60-130 mph 6.72 secs 1/2 mile trap speed 158 mph ecutek - bend calibration pro tune - flex fuel - mpe - stock turbos - oem+ Last edited by papasmurf_m3; 08-23-2020 at 03:45 PM..
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06-23-2023, 03:39 PM	#15
xfan1213 Registered 0 Rep 4 Posts Drives: F80 M3 Join Date: Mar 2023 Location: San Jose iTrader: (0)	Is V1 covered by warranty if it cracked? Can I just go to any dealer to have them replace it?
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06-23-2023, 03:56 PM	#16
aliiin I use my turn signal 707 Rep 278 Posts Drives: Toyota Tercel Join Date: Dec 2018 Location: DFW iTrader: (0)	Also check your exhaust valve actuators, I had one go bad and it’s a cheap fix.
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06-24-2023, 08:18 PM	#17
mdlex389 Private 18 Rep 60 Posts Drives: F80M3 E60M5 Join Date: Feb 2020 Location: NOVA iTrader: (0)	I am having the same issue. For reference, I have the v1 that cracked, then welded with the noise starting not long after the welding. I have had the car checked a couple of times and no one has been able to figure it out. Subscribed.
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