POLL: Has Your M Performance Exhaust (MPE) Cracked?

IB M · 09-08-2017, 11:33 PM

What gen mpe came on the LRPs? Friend's is rattling now and may be cracked.

-BEASTMW- · 09-09-2017, 01:34 AM

Quote:

Originally Posted by GVFlyer

Yes, the inconel first generation MPE cracked at ca. 15,000 miles on my 2011 E93, that's why I have the Dinan performance exhaust on my current E92 M3.

Care to compare the MPE and Dinan? I'm somewhat torn. Kinda sucks to have to choose between possible cracks and inner exhaust pipes that discolor differently from the outer ones.

818m3e92 · 09-09-2017, 02:03 AM

1st gen
25k miles
YES..crack and leak on both sides
1st crack Happened when i had stock x pipe, second and leak after MS test pipe

I first noticed the sound was off and noticed the crack, than did test pipe and didn't sound as bad after.

GVIFlyer · 09-09-2017, 07:53 AM

Quote:

Originally Posted by -BEASTMW-

Care to compare the MPE and Dinan? I'm somewhat torn. Kinda sucks to have to choose between possible cracks and inner exhaust pipes that discolor differently from the outer ones.

I like the Dinan exhaust. On this M3, I have the Dinan High Flow Carbon Fibre Intake, engine and transmission performance software and Dinan Free Flow exhaust; it all seems to work together pretty well.

The sound of the Dinan exhaust is magnificent; at cars and coffees, I've had guys walking behind my car as I entered the event, videoing my exhaust to get the sound recorded. I get positive comments all the time. A local film production company mic'd my car and used the exhaust sound for a track in a film short they made about M cars.

-BEASTMW- · 09-09-2017, 09:55 AM

Quote:

Originally Posted by GVFlyer

I like the Dinan exhaust. On this M3, I have the Dinan High Flow Carbon Fibre Intake, engine and transmission performance software and Dinan Free Flow exhaust; it all seems to work together pretty well.

The sound of the Dinan exhaust is magnificent; at cars and coffees, I've had guys walking behind my car as I entered the event, videoing my exhaust to get the sound recorded. I get positive comments all the time. A local film production company mic'd my car and used the exhaust sound for a track in a film short they made about M cars.

Awesome! Not to derail the thread but do you have any uneven discoloration of the real vs. fake tips, and over how many miles?

vincE92M3 · 09-09-2017, 10:10 AM

To those with cracked MPE v1 or v2; when did you purchase?

GVIFlyer · 09-09-2017, 11:53 PM

Quote:

Originally Posted by -BEASTMW-

Awesome! Not to derail the thread but do you have any uneven discoloration of the real vs. fake tips, and over how many miles?

I don't know which is which, but neither has discolored. I have 12,500 miles on my car; the exhaust was installed at delivery.
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ssgm1x · 03-26-2019, 11:59 AM

1st gen 10k Mile’s cracked. Replaced under warranty with updated version.

PKL · 03-26-2019, 05:34 PM

My car is 2011.75 purchased in like June 2011, how do I know if the MPE is V1 or V2?

38k miles and no crack, it's in great shape.

GtiGyver · 05-05-2020, 08:27 AM

Does anyone know if the V2 added support brace (lacking in the V1) is just a tube that is welded to both sides (top and bottom) of the exhaust to reduce vibrations and warping or does exhaust/excess pressure actually get released from the tube/brace thing?
I guess what I mean is, is this a valve or just a cross brace that travels the height of the muffler body.

UPSROD · 05-05-2020, 08:00 PM

It is simply a renforcment, it does not leak...a piece of tubing.

GtiGyver · 05-06-2020, 07:08 AM

Quote:

Originally Posted by UPSROD

It is simply a renforcment, it does not leak...a piece of tubing.

Thanks, that's what I thought. A pressure relief valve, as some have stated, in an exhaust made no sense to me.

UPSROD · 05-06-2020, 02:18 PM

Quote:

Originally Posted by GtiGyver

Thanks, that's what I thought. A pressure relief valve, as some have stated, in an exhaust made no sense to me.

Funnier the that...when the V-2 first came out guys talked about DRILLING holes in their V-1 to relieve pressure to stop cracking. Beyond stupid!

GtiGyver · 05-06-2020, 02:44 PM

Quote:

Originally Posted by UPSROD

Funnier the that...when the V-2 first came out guys talked about DRILLING holes in their V-1 to relieve pressure to stop cracking. Beyond stupid!

Well... what if I drilled into it and welded a tube in the same way as the V2. I just wonder, can you weld a SS rod to iconel ?

cae93 · 05-06-2020, 02:56 PM

I have a V2 on a 2013 E93, have about 8k miles in less than 2 years on the pipe (50k on the car) and no cracks, i still have the standard front pipes.

jiggz · 05-06-2020, 03:35 PM

Quote:

Originally Posted by GtiGyver

Well... what if I drilled into it and welded a tube in the same way as the V2. I just wonder, can you weld a SS rod to iconel ?

Yes, it's been done before. Here's one example:

https://www.m3post.com/forums/showthread.php?t=1628465

GtiGyver · 05-07-2020, 07:34 AM

Quote:

Originally Posted by jiggz

Yes, it's been done before. Here's one example:

https://www.m3post.com/forums/showthread.php?t=1628465

Fantastic! Thanks. Now to find out if anyone in Montreal can weld iconel.

Richbot · 05-08-2020, 12:35 PM

If you google iconel, all you'll find is a bunch of people on this forum misspelling Inconel

GtiGyver · 05-08-2020, 01:41 PM

Quote:

Originally Posted by Richbot

If you google iconel, all you'll find is a bunch of people on this forum misspelling Inconel

Lol.

Thanks

TMANN · 10-29-2021, 06:51 PM

getting back to the original format...
1) 1st generation
2) 75K miles on MPE
3) cracked? yes, actually a big hole about the size of a quarter
4) stock cats/pipes? Test pipes installed 5K miles ago

2nd owner of this 2012 M3, had MPE V1 installed when it was brand new at 48 miles, now has 80K miles. All good when M3 was purchased 2 years ago. At about 75K miles, installed test pipes...BANG! Presto, like magic, cracks/hole now in the the MPE!

View Poll Results: Which applies to you?
MPE (1st Gen) - Cracked	20	22.47%
MPE (1st Gen) - Looking good	41	46.07%
MPE (2nd Gen) - Cracked	2	2.25%
MPE (2nd Gen) - Looking good	28	31.46%
Multiple Choice Poll. Voters: 89. You may not vote on this poll

09-08-2017, 11:33 PM	#23
IB M Brigadier General 2790 Rep 4,252 Posts Drives: 2017 M3 MG/SO ZCP DCT Join Date: Dec 2012 Location: North Carolina iTrader: (1) Garage List 2017 BMW M3 [8.50] 2013 BMW M3 [10.00]	What gen mpe came on the LRPs? Friend's is rattling now and may be cracked.
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09-09-2017, 02:03 AM	#25
818m3e92 First Lieutenant 45 Rep 363 Posts Drives: 2011 E92 M3 CP Jerez Black Join Date: Oct 2014 Location: los angeles CA iTrader: (2)	1st gen 25k miles YES..crack and leak on both sides 1st crack Happened when i had stock x pipe, second and leak after MS test pipe I first noticed the sound was off and noticed the crack, than did test pipe and didn't sound as bad after. __________________ M Performance, Gintani, Macht Schnell, Ohlins, Vorshlag, yokohama...
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09-09-2017, 10:10 AM	#28
vincE92M3 Major 567 Rep 1,368 Posts Drives: ///M Join Date: Nov 2012 Location: Atlanta, GA iTrader: (3) Garage List '11 E92 M3 [0.00]	To those with cracked MPE v1 or v2; when did you purchase? __________________ ///My OEM+ Silverstone Stripper
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03-26-2019, 11:59 AM	#30
ssgm1x Captain 419 Rep 771 Posts Drives: 2020 M340i & 2018 M3 Join Date: Aug 2017 Location: Cherry hill ,NJ iTrader: (0)	1st gen 10k Mile’s cracked. Replaced under warranty with updated version.
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03-26-2019, 05:34 PM	#31
PKL Brigadier General 849 Rep 3,274 Posts Drives: 2020 M4, 2022 X6 Join Date: Oct 2008 Location: San Fernando Valley iTrader: (1)	My car is 2011.75 purchased in like June 2011, how do I know if the MPE is V1 or V2? 38k miles and no crack, it's in great shape. __________________
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05-05-2020, 08:27 AM	#32
GtiGyver Lieutenant 69 Rep 460 Posts Drives: 2009 Space Grey E90 328i MT Join Date: Jun 2009 Location: Montreal iTrader: (3)	Does anyone know if the V2 added support brace (lacking in the V1) is just a tube that is welded to both sides (top and bottom) of the exhaust to reduce vibrations and warping or does exhaust/excess pressure actually get released from the tube/brace thing? I guess what I mean is, is this a valve or just a cross brace that travels the height of the muffler body. Last edited by GtiGyver; 05-05-2020 at 08:41 AM..
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05-05-2020, 08:00 PM	#33
UPSROD Lieutenant Colonel 947 Rep 1,933 Posts Drives: 2013 E92 M3 Join Date: Jul 2015 Location: Richland, Wa. iTrader: (2) Garage List 2013 BMW M3 [10.00]	It is simply a renforcment, it does not leak...a piece of tubing.
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05-06-2020, 02:56 PM	#37
cae93 Second Lieutenant 257 Rep 244 Posts Drives: 2013 E93 M3 Join Date: May 2018 Location: Morgan Hill, CA iTrader: (0)	I have a V2 on a 2013 E93, have about 8k miles in less than 2 years on the pipe (50k on the car) and no cracks, i still have the standard front pipes.
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05-08-2020, 12:35 PM	#40
Richbot Major General 2761 Rep 5,483 Posts Drives: Jerez Black E90 Join Date: Sep 2007 Location: STL iTrader: (5)	If you google iconel, all you'll find is a bunch of people on this forum misspelling Inconel __________________
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10-29-2021, 06:51 PM	#42
TMANN Private First Class 38 Rep 119 Posts Drives: '12 M3; '95 M3; '12 X535d Join Date: Oct 2010 Location: Seattle, WA iTrader: (0)	getting back to the original format... 1) 1st generation 2) 75K miles on MPE 3) cracked? yes, actually a big hole about the size of a quarter 4) stock cats/pipes? Test pipes installed 5K miles ago 2nd owner of this 2012 M3, had MPE V1 installed when it was brand new at 48 miles, now has 80K miles. All good when M3 was purchased 2 years ago. At about 75K miles, installed test pipes...BANG! Presto, like magic, cracks/hole now in the the MPE!
	Appreciate 0 Quote