Cracked MPE Repair.

mark9661 · 06-02-2018, 09:29 AM

Did someone put a thread up about repairing a cracked MPE? Just noticed mines started to crack and I'm not sure if it's covered under warranty. I bought it from a dealer in London and don't know if it was fitted by BMW. I seem to remember someone putting quite an extensive thread up.

mark9661 · 06-02-2018, 10:42 AM

Found it on cutters. T5Pilot put the comprehensive fix in the post below.

http://forums.m3cutters.co.uk/showth...10#post2579810

Wills2 · 06-03-2018, 10:04 AM

Really poor that such an expensive piece of kit has this issue, they should have made it more robust, stainless steel would have done the job better and cheaper.

mark9661 · 06-04-2018, 06:14 AM

Added some contact information to the thread on cutters, to have the repair done if anyone needs it.

mark9661 · 06-05-2018, 07:04 AM

Also found out the guarantee is only valid for two years. Not three like the car.
It's classed as an accessory.

Alvinized52 · 07-09-2018, 02:29 AM

Quote:

Originally Posted by mark9661

Did someone put a thread up about repairing a cracked MPE? Just noticed mines started to crack and I'm not sure if it's covered under warranty. I bought it from a dealer in London and don't know if it was fitted by BMW. I seem to remember someone putting quite an extensive thread up.

If its dealer purchased and installed then it should be covered by warranty.

cAtLeYx · 07-09-2018, 01:53 PM

I had mine replaced at the final 3 year inspection.

mark9661 · 07-09-2018, 06:05 PM

Quote:

Originally Posted by Alvinized52

If its dealer purchased and installed then it should be covered by warranty.

It should but it isn't, getting mine replaced as a goodwill gesture. It's classed as an accessory.

Alvinized52 · 07-09-2018, 10:29 PM

Quote:

Originally Posted by mark9661

It should but it isn't, getting mine replaced as a goodwill gesture. It's classed as an accessory.

Lucky you! Unfortunately, We no longer have good will policies here is the US... especially since our idiot of a President took over.

Alvinized52 · 07-09-2018, 10:32 PM

Mine cracked before... then i got it repaired. One year later... cracked again. Even Bigger crack... urgghhhh
Im out of ideas.

Wills2 · 07-10-2018, 11:14 AM

Surely the Lemon law should help you out in the states, the product isn't fit for purpose.

t5pilot · 07-11-2018, 01:39 PM

Quote:

Originally Posted by Alvinized52

Mine cracked before... then i got it repaired. One year later... cracked again. Even Bigger crack... urgghhhh
Im out of ideas.

You need to get it re-welded - AND add the additional support brackets as per my linked thread in the 2nd post. I've had no issues since.

verdik · 07-11-2018, 02:33 PM

Quote:

Originally Posted by Alvinized52

Mine cracked before... then i got it repaired. One year later... cracked again. Even Bigger crack... urgghhhh
Im out of ideas.

Maybe the repair was not using proper weld wire material.
Contact Ryan on his IG: Fabchild. He is located in Riverside. He weld my E92 MPE.

allinon72 · 07-11-2018, 03:10 PM

Quite clearly the muffler can can't handle either the weight of the pipe and/or the vibrations.

Alvinized52 · 07-13-2018, 01:33 AM

Quote:

Originally Posted by t5pilot

You need to get it re-welded - AND add the additional support brackets as per my linked thread in the 2nd post. I've had no issues since.

Yes... definitely going to add those brackets. Are those 3/4" tubes? Top and bottom right?

t5pilot · 07-13-2018, 03:52 AM

Quote:

Originally Posted by Alvinized52

Yes... definitely going to add those brackets. Are those 3/4" tubes? Top and bottom right?

22mm I believe on mine - But anything over 1/2" should do. I believe the key is doing top & bottom, not just one or the other.

Alvinized52 · 07-13-2018, 08:07 AM

Quote:

Originally Posted by t5pilot

22mm I believe on mine - But anything over 1/2" should do. I believe the key is doing top & bottom, not just one or the other.

Ok...thanks! I've ordered 3/4" tubes I assumed that was the size when I first saw these pics. Those are expected to arrive today. I spoke to a fabricator that can weld titanium about it. His concern is that he can't guarantee it wont crack again because the can likely has carbon build up inside he can't avoid (that cant easily be cleaned off and will be likely contaminants even with purging).

Hope these bars will help reduce stress.

Alvinized52 · 07-17-2018, 05:09 PM

Just got mine back from being repaired...

I also got support brackets added to help keep it from cracking again. Picked it up an hour ago. I will install and report back to see if it affects the sound and if any more rattling occurs.

Alvinized52 · 07-18-2018, 10:31 AM

Quick update:
I installed my newly repaired exhaust yesterday and wanted to report back on how it sounds after driving it around. First of all, the rattle is completely gone even at start up. No more high-pitched metallic ringing/rattling sound. Not sure if its just placebo effect, but the exhaust note seems cleaner too. It seems to have reduced that raspy tone on higher revs... tone just seems a lot more solid sound. I like it!

Overall, happy i did the repair with brackets. I just hope it holds up without cracking again since ive been told heat cycled Ti are weaker and prone to cracking more.

t5pilot · 07-23-2018, 04:17 AM

Quote:

Originally Posted by Alvinized52

Quick update:
I installed my newly repaired exhaust yesterday and wanted to report back on how it sounds after driving it around. First of all, the rattle is completely gone even at start up. No more high-pitched metallic ringing/rattling sound. Not sure if its just placebo effect, but the exhaust note seems cleaner too. It seems to have reduced that raspy tone on higher revs... tone just seems a lot more solid sound. I like it!

Overall, happy i did the repair with brackets. I just hope it holds up without cracking again since ive been told heat cycled Ti are weaker and prone to cracking more.

Nice job, very similar to mine. I can report that to date, I haven't had any further issues. You're not imagining the sound difference - It sounds better as the leaks have been sealed...

Alvinized52 · 07-23-2018, 11:40 PM

Quote:

Originally Posted by t5pilot

Nice job, very similar to mine. I can report that to date, I haven't had any further issues. You're not imagining the sound difference - It sounds better as the leaks have been sealed...

Did the tone of your exhaust change as well? Mine sounds a little different.... especially at high revs... not as raspy.

Gray-M4-COMP · 05-17-2022, 11:23 AM

Quote:

Originally Posted by Alvinized52

Mine cracked before... then i got it repaired. One year later... cracked again. Even Bigger crack... urgghhhh
Im out of ideas.

Add bracing

06-02-2018, 09:29 AM	#1
mark9661 Private First Class 135 Rep 166 Posts Drives: M4 Black/Black Join Date: May 2015 Location: Cumbria UK. iTrader: (0)	Cracked MPE Repair. Did someone put a thread up about repairing a cracked MPE? Just noticed mines started to crack and I'm not sure if it's covered under warranty. I bought it from a dealer in London and don't know if it was fitted by BMW. I seem to remember someone putting quite an extensive thread up.
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06-02-2018, 10:42 AM	#2
mark9661 Private First Class 135 Rep 166 Posts Drives: M4 Black/Black Join Date: May 2015 Location: Cumbria UK. iTrader: (0)	Found it on cutters. T5Pilot put the comprehensive fix in the post below. http://forums.m3cutters.co.uk/showth...10#post2579810
	Appreciate 1 AlpineWhite_F8082.00 Quote

06-03-2018, 10:04 AM	#3
Wills2 Barge driver 8655 Rep 12,424 Posts Drives: 730d Join Date: Aug 2014 Location: UK iTrader: (0)	Really poor that such an expensive piece of kit has this issue, they should have made it more robust, stainless steel would have done the job better and cheaper. __________________ 730d/Z4C
	Appreciate 1 mark9661135.00 Quote

06-04-2018, 06:14 AM	#4
mark9661 Private First Class 135 Rep 166 Posts Drives: M4 Black/Black Join Date: May 2015 Location: Cumbria UK. iTrader: (0)	Added some contact information to the thread on cutters, to have the repair done if anyone needs it.
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06-05-2018, 07:04 AM	#5
mark9661 Private First Class 135 Rep 166 Posts Drives: M4 Black/Black Join Date: May 2015 Location: Cumbria UK. iTrader: (0)	Also found out the guarantee is only valid for two years. Not three like the car. It's classed as an accessory.
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07-09-2018, 01:53 PM	#7
cAtLeYx Private 23 Rep 50 Posts Drives: Mineral White M4 DCT Join Date: Jun 2018 Location: UK iTrader: (0)	I had mine replaced at the final 3 year inspection.
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07-09-2018, 10:32 PM	#10
Alvinized52 @ste4lthedF82 882 Rep 1,498 Posts Drives: 2016 M4 SSII Join Date: Sep 2015 Location: Los Angeles iTrader: (1) Garage List 2016 BMW M4 [10.00]	Mine cracked before... then i got it repaired. One year later... cracked again. Even Bigger crack... urgghhhh Im out of ideas. Attached Images __________________ 2016 Satin SSII M4 (Instagram: @Ste4lthedF82) see my featured mods below... http://f80.bimmerpost.com/forums/sho....php?t=1197842
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07-10-2018, 11:14 AM	#11
Wills2 Barge driver 8655 Rep 12,424 Posts Drives: 730d Join Date: Aug 2014 Location: UK iTrader: (0)	Surely the Lemon law should help you out in the states, the product isn't fit for purpose. __________________ 730d/Z4C
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07-11-2018, 03:10 PM	#14
allinon72 Brigadier General 4920 Rep 3,803 Posts Drives: 20' M2C, 23' X1 Join Date: May 2017 Location: Indianapolis, IN iTrader: (2)	Quite clearly the muffler can can't handle either the weight of the pipe and/or the vibrations.
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07-17-2018, 05:09 PM	#18
Alvinized52 @ste4lthedF82 882 Rep 1,498 Posts Drives: 2016 M4 SSII Join Date: Sep 2015 Location: Los Angeles iTrader: (1) Garage List 2016 BMW M4 [10.00]	Just got mine back from being repaired... I also got support brackets added to help keep it from cracking again. Picked it up an hour ago. I will install and report back to see if it affects the sound and if any more rattling occurs. Attached Images __________________ 2016 Satin SSII M4 (Instagram: @Ste4lthedF82) see my featured mods below... http://f80.bimmerpost.com/forums/sho....php?t=1197842
	Appreciate 2 mark9661135.00 shay2nak1070.00 Quote

07-18-2018, 10:31 AM	#19
Alvinized52 @ste4lthedF82 882 Rep 1,498 Posts Drives: 2016 M4 SSII Join Date: Sep 2015 Location: Los Angeles iTrader: (1) Garage List 2016 BMW M4 [10.00]	Quick update: I installed my newly repaired exhaust yesterday and wanted to report back on how it sounds after driving it around. First of all, the rattle is completely gone even at start up. No more high-pitched metallic ringing/rattling sound. Not sure if its just placebo effect, but the exhaust note seems cleaner too. It seems to have reduced that raspy tone on higher revs... tone just seems a lot more solid sound. I like it! Overall, happy i did the repair with brackets. I just hope it holds up without cracking again since ive been told heat cycled Ti are weaker and prone to cracking more. __________________ 2016 Satin SSII M4 (Instagram: @Ste4lthedF82) see my featured mods below... http://f80.bimmerpost.com/forums/sho....php?t=1197842
	Appreciate 4 mark9661135.00 iooal3xooi16.50 t5pilot977.50 shay2nak1070.00 Quote