MPE muffler can splitting on sides?

[f80er]

Originally Posted by Desborough

I didn't go the cheapest route that s exhaust came with my car which was used. I didn't purchase the exhaust myself

Kicks typeM4's opinion to the moon doesn't it?

Your case is as good as anyone's to get it covered by BMW as there is no way the exhaust was older than 2yrs and you bought the car with it on but still no help from BMW. I know of one person that got theirs replaced and he works for a BMW dealership so not sure how much that played into it. Has anyone else gotten theirs warrantied?

[Desborough]

Originally Posted by f80er

Kicks typeM4's opinion to the moon doesn't it?

Your case is as good as anyone's to get it covered by BMW as there is no way the exhaust was older than 2yrs and you bought the car with it on but still no help from BMW. I know of one person that got theirs replaced and he works for a BMW dealership so not sure how much that played into it. Has anyone else gotten theirs warrantied?

I'm going to go the repair route like you did. Welds look nice on yours.

[Fake News 2017]

Originally Posted by Desborough

I didn't go the cheapest route that s exhaust came with my car which was used. I didn't purchase the exhaust myself

My bad, I wasn't paying attention or remembered the original post wrong.
Happens sometime, must have had too many

Anyway, sorry about your problem, it does suck!

And I'll give myself this

[f80er]

Originally Posted by TypeM4

My bad, I wasn't paying attention or remembered the original post wrong.
Happens sometime, must have had too many

Anyway, sorry about your problem, it does suck!

And I'll give myself this

[Fake News 2017]

Originally Posted by f80er

When I'm wrong I admit I'm wrong!

[grundlehunter]

Originally Posted by TypeM4

When I'm wrong I admit I'm wrong!

Now if only BMW would do the same.

[Desborough]

Originally Posted by grundlehunter

Now if only BMW would do the same.

[horsepower_and_hounds]

I have a inspection apt tomorrow at the dealer, step one

[CanAutM3]

Originally Posted by f80er

Kicks typeM4's opinion to the moon doesn't it?

Your case is as good as anyone's to get it covered by BMW as there is no way the exhaust was older than 2yrs and you bought the car with it on but still no help from BMW. I know of one person that got theirs replaced and he works for a BMW dealership so not sure how much that played into it. Has anyone else gotten theirs warrantied?

Just as precision, if the exhaust is installed by an approved BMW technician, the exhaust is warrantied for the longer of the two possibilities: matching the remaining warranty on thr car or for two years.

For example, I installed my MPE when the car was almost new, so my MPE has a ~4 year warranty.

[Damage Inc]

How do other exhaust manufacturers handle their warranties for first or second hand buyers? I thought Dinan, Fabspeed, Magnaflow, and others have lifetime warranties? I haven't researched it a ton, but I don't recall you need a receipt to get cracking or defects repaired.

I was considering a second hand MPE until I saw this thread. I wouldn't even buy one new after reading this, since it will likely crack outside of the warranty period, then I'm stuck with a cracked exhaust.

This looks very weak on BMW's part. Its like they knew there would be issues thus the limited time warranty vs. lifetime by other manufacturers.

[CanAutM3]

Originally Posted by MojorisinM3

How do other exhaust manufacturers handle their warranties for first or second hand buyers? I thought Dinan, Fabspeed, Magnaflow, and others have lifetime warranties? I haven't researched it a ton, but I don't recall you need a receipt to get cracking or defects repaired.

I was considering a second hand MPE until I saw this thread. I wouldn't even buy one new after reading this, since it will likely crack outside of the warranty period, then I'm stuck with a cracked exhaust.

This looks very weak on BMW's part. Its like they knew there would be issues thus the limited time warranty vs. lifetime by other manufacturers.

The warranty for all M-Performance parts has always been that way, they did not specically "tailor" it for the F8X...

[horsepower_and_hounds]

Most "lifetime" warranties are usually for the original buyer and non transferable...as the need for a receipt. Some are lucky enough to manipulate this situation and make out but nothing is guarantied.

Crack is verified so ball is rolling so I will see what they say......But I am not holding my breath

[Alvinized52]

Darn. Just looked at mine and bamm! Looks like mine is starting to crack as well. Passenger side only.

[MrSmartyPants]

So it looks like there are most likely a couple of contributing factors with the cracking. 1) You have a formed neck exiting the can, which means the material is probably slightly thinner and there is residual stress from the cold working. 2) The formed neck is in the HAZ (heat affected zone) of the weld. Typically these areas have lower strength than the base material post welding. 3) There is tensile loading on bottom of that pipe where it exits the can. Materials are stronger in compression than in tension. The 2 pipes are holding up the can and other pipes. 4) Dont know how hot it really gets, but materials also lose strength as temperature increases and the derating can be dramatic depending on the material.

Agree that it blows and in my opinion its a design issue. But really, the fix isnt that bad. Suppose it sucks for those that dont work on their cars (seems to be more here than the old jap forums I was on).

My take. 1) Have the cracks welded shut. 2) Have the welder add a gusset from the tube exiting the muffler to the side of the can. This needs to be on the top of the tube so the gusset is in compression. All told should be probably $300-450 to repair including some Ti sheet.

[mariom3]

.....

[Arcades]

Originally Posted by Alvinized52

Darn. Just looked at mine and bamm! Looks like mine is starting to crack as well. Passenger side only.

Oh lord Alvin.

I hope you can fix it because I remember you bought it used. Good luck -.-

[AlexNFH]

Originally Posted by maximumpsi

If anyone is local we can repair any damaged systems. They can also be shipped to us but it is obviously an additional expense.

-Mike

Mike,

can you provide some contact information please?

Thanks,
Alex

[martial]

this thread is eye opening and a bit disconcerting. Does anyone still have their original MPE without any splitting and cracks?

[grundlehunter]

Originally Posted by Lowness

that basically means every single one of these MPE will crack eventually. Just a matter of time.

Yep, but people keep buying so BMW doesn't care.

[gavinsan]

This thread does seem alarming

I am in the U.K. And I have bought a brand new MPe and had it fitted at the dealership before collection

However to think that the exhaust has a design fault and is not being recalled is disappointing

I think more pressure from the buying public needs to be put on BMW

Question .... does the M4 track car they use for Moro gp use the same MPE exhaust ?

[logicalunit]

This thread made me check my MPE multiple times already.

[JibSTir13]

Damn, I was planning on purchasing the MPE, but not anymore.

Do you guys think BMW will address this issue and have a fix for exhausts being produced moving forward or they are going to keep selling the exhaust as-is?