2019 440i mppsk muffler rust

Slimshreddy · 04-07-2021, 07:26 PM

Got this car a week ago and love it!!

2019 440i xdrive mppsk 6mt

Car has 27000 km. Just wondering if this rusting is normal for the m performance exhaust?

tturedraider · 04-07-2021, 07:29 PM

I would definitely call that abnormal.

BimR · 04-08-2021, 02:30 PM

Yes that isn't typical. Almost feels like someone had the exhaust off the car sitting in a wet corner. 😱

Th3Walrus · 04-08-2021, 02:33 PM

I have a 2017 that came with MPPSK and it looks nothing like that.

Psi5 · 04-08-2021, 02:43 PM

Ooof, not normal.

CajunBMW · 04-08-2021, 03:04 PM

I have had mine for two years and it does not look like that. Is it surface rust that can be cleaned off? If so, maybe that can be done. I clean mine now and then when washing the car - hose it off after a brief scrub with a soapy brush.

Wires · 04-08-2021, 04:55 PM

///M exhaust isn't stainless?

That shouldn't be happening in my mind.

Slimshreddy · 04-08-2021, 06:01 PM

Definitely some surface rust but I didn't think it looked normal for a m performance part. Makes the car look like trash from behind.

Dealer said they would look at it when I bring it for an oil change in June.

Boostedphil698 · 04-08-2021, 06:52 PM

That is definitely is not normal. I'd call the dealer.

AspektUSA · 04-08-2021, 08:36 PM

Hit it with some BKF or Bon Ami?

Its stainless steel after all.

Billfitz · 04-08-2021, 09:16 PM

It's supposed to be stainless. That doesn't mean it won't corrode, it will, but at a very slow rate and it won't look like that. These days anything that can be counterfeited will be. For instance: https://www.sc-project.com/en/fake-exhaust/

jnj2455 · 04-08-2021, 09:47 PM

Makes me wonder if they took that from like a totaled vehicle and installed it on yours somehow

Mine looks nothing like that either.

Juice247 · 04-08-2021, 10:05 PM

Here is what the original MPPSK exhaust should look like, in case there are any irregularities you can spot.

vmaniqui · 04-08-2021, 11:32 PM

it looks like not original as you can see that the pipes are all rusting also. can the OP verify or check or maybe take some more pictures and post?

CajunBMW · 04-08-2021, 11:41 PM

Quote:

Originally Posted by vmaniqui

it looks like not original as you can see that the pipes are all rusting also. can the OP verify or check or maybe take some more pictures and post?

That is a good point. More pictures.

A few more suggestions. Do the valves operate correctly when in comfort vs sport mode? So they should both open on sport mode and only one will be open in comfort unless over 4000 rpms. Are there lots of burbles and pops in sport mode when you wind it up and then get off the gas. This is how my mppsk works.

What size are the exhaust tips? Are they official m performance silver or CF tips?

Since the tune is done by a bmw dealership or at least officially by bmw it will have been recorded. I got lots of bmw paperwork when mine was added with verification of my tune. Also as part of the tune was a change in the max HP and TQ readings on the sports dials when you select for them in idrive. I can confirm that my max values changed to account for the higher hp and TQ values.

Skyhigh · 04-09-2021, 02:11 AM

Definitely not normal, as already established BUT:

- It is normal for the middle section (where you have most of the rust) to get darker (yellowish) in time (or rather with mileage). This is due to the middle reaching the highest temperature. Mine has slowly started showing that as well

- As you may guess, humidity plays a HUGE role here. I live in a humid environment and my pipes are lo longer stainless steel -grey.... they now exhibit some rusty patina. The muffler does not however.

Slimshreddy · 04-09-2021, 02:26 AM

The sport and comfort setting work perfect. Lots of pops in sport etc.

I'll get some more pictures up and let the detectives try and figure out what's going on here.

I bought the car from a bmw dealer so I assume that it's all legit parts... But seems like they might have been made on a Monday or Friday

Skyhigh · 04-09-2021, 02:46 AM

My best guess is that the car has been spending a lot of time in a very, very humid environment. Maybe a heated, but humid garage.

Slimshreddy · 04-10-2021, 06:34 PM

Some of the rust seems to be coming off with some elbow grease..some isn't.. tthe joints definitely aren't getting any better

tturedraider · 04-10-2021, 06:40 PM

I’ll bet Rust-Oleum makes a silver metallic paint. You could try that.

https://www.rustoleum.com/product-ca...ic-spray-paint

Skyhigh · 04-10-2021, 07:07 PM

I'd say younger now in the „normal" range. I still believe your car has simply been subjected to high humidity / salt.

AllaVodka · 04-10-2021, 09:47 PM

Im with skyhigh on the humidity / salt water. Was this car in a location that this could hve happened. Like florida, houston, galveston, carolinas etc?

04-07-2021, 07:26 PM	#1
Slimshreddy New Member 6 Rep 24 Posts Drives: 2019 440i xdrive Join Date: Apr 2021 Location: BC iTrader: (0)	2019 440i mppsk muffler rust Got this car a week ago and love it!! 2019 440i xdrive mppsk 6mt Car has 27000 km. Just wondering if this rusting is normal for the m performance exhaust? Attached Images Last edited by Slimshreddy; 04-07-2021 at 07:44 PM..
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04-07-2021, 07:29 PM	#2
tturedraider Major General 4975 Rep 6,237 Posts Drives: 2018 340i M Sport Join Date: Apr 2006 Location: Chicago, Edgewater (via Texas & Tennessee) iTrader: (0) Garage List 2018 BMW 340i M Sport [9.38] 2020 BMW M340i xDrive [10.00] 2018 BMW 340i M Sport [8.00] 2006 BMW 330i Sport [4.50] 2004 BMW 330i ZHP [7.25] 2000 BMW 328i [6.00]	I would definitely call that abnormal. __________________ www.bmwcca.org member #388003 - Use me as a referral & you could win a one day ///M Driving School!! ___________________________________________
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04-08-2021, 02:30 PM	#3
BimR Lieutenant 245 Rep 500 Posts Drives: 2016 328 Join Date: Sep 2020 Location: New York iTrader: (0)	Yes that isn't typical. Almost feels like someone had the exhaust off the car sitting in a wet corner. 😱
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04-08-2021, 02:33 PM	#4
Th3Walrus Lieutenant 341 Rep 437 Posts Drives: 2020 X3MC Alpine White/Sahkir Join Date: Sep 2020 Location: Ontario iTrader: (0)	I have a 2017 that came with MPPSK and it looks nothing like that.
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04-08-2021, 02:43 PM	#5
Psi5 Second Lieutenant 163 Rep 259 Posts Drives: 2020 BMW F32 440i Join Date: Aug 2019 Location: Northern Virginia iTrader: (0)	Ooof, not normal. __________________ Garage: 2020 F32 440i 6MT 2018 Mazda 3 6MT 2013 Mazda 3 6MT 2008 Honda Oddyssey
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04-08-2021, 03:04 PM	#6
CajunBMW Lieutenant Colonel 1289 Rep 1,641 Posts Drives: BMW 340i and X1, Chrysler Van Join Date: Mar 2019 Location: Shreveport, LA iTrader: (0)	I have had mine for two years and it does not look like that. Is it surface rust that can be cleaned off? If so, maybe that can be done. I clean mine now and then when washing the car - hose it off after a brief scrub with a soapy brush.
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04-08-2021, 04:55 PM	#7
Wires Brigadier General 1646 Rep 4,876 Posts Drives: 2016 340i xDrive Join Date: Apr 2008 Location: Calgary iTrader: (0)	///M exhaust isn't stainless? That shouldn't be happening in my mind.
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04-08-2021, 06:01 PM	#8
Slimshreddy New Member 6 Rep 24 Posts Drives: 2019 440i xdrive Join Date: Apr 2021 Location: BC iTrader: (0)	Definitely some surface rust but I didn't think it looked normal for a m performance part. Makes the car look like trash from behind. Dealer said they would look at it when I bring it for an oil change in June.
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04-08-2021, 06:52 PM	#9
Boostedphil698 Major 436 Rep 1,119 Posts Drives: 2015 BMW 435i Xdrive MSport Join Date: Mar 2020 Location: Greater Philadelphia iTrader: (0) Garage List 2015 BMW 435XI [0.00] 2009 Honda Civic [0.00]	That is definitely is not normal. I'd call the dealer. __________________ 2015 435i Xdrive (Klaus) Stanced 8th Gen Honda Civic (The daily)
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04-08-2021, 08:36 PM	#10
AspektUSA Lieutenant 271 Rep 495 Posts Drives: 340i MSport/THP Join Date: Dec 2018 Location: Denver iTrader: (0)	Hit it with some BKF or Bon Ami? Its stainless steel after all.
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04-08-2021, 09:16 PM	#11
Billfitz Lieutenant General 8243 Rep 16,079 Posts Drives: '15 328iX GT Join Date: Jan 2015 Location: New Hampshire iTrader: (0)	It's supposed to be stainless. That doesn't mean it won't corrode, it will, but at a very slow rate and it won't look like that. These days anything that can be counterfeited will be. For instance: https://www.sc-project.com/en/fake-exhaust/
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04-08-2021, 09:47 PM	#12
jnj2455 First Lieutenant 365 Rep 327 Posts Drives: 440i 6MT/RWD/MPPSK/2VF Join Date: Oct 2020 Location: NJ/NYC iTrader: (0)	Makes me wonder if they took that from like a totaled vehicle and installed it on yours somehow Mine looks nothing like that either.
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04-08-2021, 10:05 PM	#13
Juice247 Private First Class 108 Rep 187 Posts Drives: '17 BMW 440xi Gran Coupe Join Date: Jun 2019 Location: Chicago iTrader: (0)	Here is what the original MPPSK exhaust should look like, in case there are any irregularities you can spot. Attached Images
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04-08-2021, 11:32 PM	#14
vmaniqui Private First Class 70 Rep 140 Posts Drives: Toyota Land Cruiser/340i M Join Date: Jul 2019 Location: California iTrader: (0)	it looks like not original as you can see that the pipes are all rusting also. can the OP verify or check or maybe take some more pictures and post?
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04-09-2021, 02:11 AM	#16
Skyhigh Brigadier General 1888 Rep 3,873 Posts Drives: BMW F36 Join Date: Apr 2018 Location: Europe iTrader: (0)	Definitely not normal, as already established BUT: - It is normal for the middle section (where you have most of the rust) to get darker (yellowish) in time (or rather with mileage). This is due to the middle reaching the highest temperature. Mine has slowly started showing that as well - As you may guess, humidity plays a HUGE role here. I live in a humid environment and my pipes are lo longer stainless steel -grey.... they now exhibit some rusty patina. The muffler does not however. __________________ "Large increases in cost with questionable increases in performance can be tolerated only in cars and women."
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04-09-2021, 02:26 AM	#17
Slimshreddy New Member 6 Rep 24 Posts Drives: 2019 440i xdrive Join Date: Apr 2021 Location: BC iTrader: (0)	The sport and comfort setting work perfect. Lots of pops in sport etc. I'll get some more pictures up and let the detectives try and figure out what's going on here. I bought the car from a bmw dealer so I assume that it's all legit parts... But seems like they might have been made on a Monday or Friday
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04-09-2021, 02:46 AM	#18
Skyhigh Brigadier General 1888 Rep 3,873 Posts Drives: BMW F36 Join Date: Apr 2018 Location: Europe iTrader: (0)	My best guess is that the car has been spending a lot of time in a very, very humid environment. Maybe a heated, but humid garage. __________________ "Large increases in cost with questionable increases in performance can be tolerated only in cars and women."
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04-10-2021, 06:34 PM	#19
Slimshreddy New Member 6 Rep 24 Posts Drives: 2019 440i xdrive Join Date: Apr 2021 Location: BC iTrader: (0)	Some of the rust seems to be coming off with some elbow grease..some isn't.. tthe joints definitely aren't getting any better Attached Images
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04-10-2021, 06:40 PM	#20
tturedraider Major General 4975 Rep 6,237 Posts Drives: 2018 340i M Sport Join Date: Apr 2006 Location: Chicago, Edgewater (via Texas & Tennessee) iTrader: (0) Garage List 2018 BMW 340i M Sport [9.38] 2020 BMW M340i xDrive [10.00] 2018 BMW 340i M Sport [8.00] 2006 BMW 330i Sport [4.50] 2004 BMW 330i ZHP [7.25] 2000 BMW 328i [6.00]	I’ll bet Rust-Oleum makes a silver metallic paint. You could try that. https://www.rustoleum.com/product-ca...ic-spray-paint __________________ www.bmwcca.org member #388003 - Use me as a referral & you could win a one day ///M Driving School!! ___________________________________________ Last edited by tturedraider; 04-10-2021 at 07:42 PM..
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04-10-2021, 07:07 PM	#21
Skyhigh Brigadier General 1888 Rep 3,873 Posts Drives: BMW F36 Join Date: Apr 2018 Location: Europe iTrader: (0)	I'd say younger now in the „normal" range. I still believe your car has simply been subjected to high humidity / salt. __________________ "Large increases in cost with questionable increases in performance can be tolerated only in cars and women."
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04-10-2021, 09:47 PM	#22
AllaVodka Captain 634 Rep 709 Posts Drives: BMW B58 Join Date: Dec 2020 Location: CT iTrader: (0)	Im with skyhigh on the humidity / salt water. Was this car in a location that this could hve happened. Like florida, houston, galveston, carolinas etc?
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