M550 Rear Diffuser - Exhaust fitment

cclcal · 10-31-2021, 02:04 PM

[QUOTE=Joe-BMW33;28201270]Nice, looking forward to pics. So the OEM diffuser just pulls off or are there screws holding it down?

Edit: Never mind, got it:

hey guys, so ive installed the new diffuser from ebay. fits great, color is great, wife likes the look and color better than OEM.
1. I installed left side 1st, right gap is a little wider than left, i tried moving shifting diffuser and it helped a little, moving actual bumper helps too.
2. When removing the OEM diffuser, there are total of 10 screws, use a 8mm socket. After removing all screws, just gently pull on diffuser, pushing on bumper and it comes right out. There are four clips on bottom that comes out easily by pushing up. New diffuser, there are 9 screw holes, but only used 7. The clips line up with bumper. However, there are two screw holes that cannot be lined up to heatshield.

any questions?

Joe-BMW33 · 11-01-2021, 05:32 AM

[QUOTE=cclcal;28202437]

Quote:

Originally Posted by Joe-BMW33

Nice, looking forward to pics. So the OEM diffuser just pulls off or are there screws holding it down?

Edit: Never mind, got it:

hey guys, so ive installed the new diffuser from ebay. fits great, color is great, wife likes the look and color better than OEM.
1. I installed left side 1st, right gap is a little wider than left, i tried moving shifting diffuser and it helped a little, moving actual bumper helps too.
2. When removing the OEM diffuser, there are total of 10 screws, use a 8mm socket. After removing all screws, just gently pull on diffuser, pushing on bumper and it comes right out. There are four clips on bottom that comes out easily by pushing up. New diffuser, there are 9 screw holes, but only used 7. The clips line up with bumper. However, there are two screw holes that cannot be lined up to heatshield.

any questions?

Wow! Thanks taking the time to take pictures and post. It is even more helpful to me, because I think your car is Carbon Black? Mine is, so I really have a great sample here of what it would look like. I see what you mean about the slightly larger gap on the right vs. the left, but if you didn't point it out, I would not notice. It is minimal.

Did the new diffuser come with reflectors or did you have to transfer them over?

Joe-BMW33 · 11-01-2021, 05:41 AM

I did a little before and after using your pic and mine.

cclcal · 11-01-2021, 12:05 PM

Quote:

Originally Posted by Joe-BMW33

I did a little before and after using your pic and mine.

nice! thanks

no reflectors, just popped the OEMs ones out and transferred to new diffuser.

yes, car is Carbon black. The glossy black looks good and really allows the blue hues to show in the carbon blk.

selbyp93 · 11-03-2021, 11:15 PM

[QUOTE=cclcal;28202437]

Quote:

Originally Posted by Joe-BMW33

Nice, looking forward to pics. So the OEM diffuser just pulls off or are there screws holding it down?

Edit: Never mind, got it:

hey guys, so ive installed the new diffuser from ebay. fits great, color is great, wife likes the look and color better than OEM.
1. I installed left side 1st, right gap is a little wider than left, i tried moving shifting diffuser and it helped a little, moving actual bumper helps too.
2. When removing the OEM diffuser, there are total of 10 screws, use a 8mm socket. After removing all screws, just gently pull on diffuser, pushing on bumper and it comes right out. There are four clips on bottom that comes out easily by pushing up. New diffuser, there are 9 screw holes, but only used 7. The clips line up with bumper. However, there are two screw holes that cannot be lined up to heatshield.

any questions?

Looking good! The gaps aren't really that obvious.

cclcal · 11-08-2021, 09:47 PM

[QUOTE=Joe-BMW33;28204114]

Quote:

Originally Posted by cclcal

Wow! Thanks taking the time to take pictures and post. It is even more helpful to me, because I think your car is Carbon Black? Mine is, so I really have a great sample here of what it would look like. I see what you mean about the slightly larger gap on the right vs. the left, but if you didn't point it out, I would not notice. It is minimal.

Did the new diffuser come with reflectors or did you have to transfer them over?

did you end up buying one?

Joe-BMW33 · 11-09-2021, 02:45 AM

[QUOTE=cclcal;28232254]

Quote:

Originally Posted by Joe-BMW33

Quote:

Originally Posted by cclcal

Wow! Thanks taking the time to take pictures and post. It is even more helpful to me, because I think your car is Carbon Black? Mine is, so I really have a great sample here of what it would look like. I see what you mean about the slightly larger gap on the right vs. the left, but if you didn't point it out, I would not notice. It is minimal.

Did the new diffuser come with reflectors or did you have to transfer them over?

did you end up buying one?

Not yet, still procrastinating on next steps, including considering the BMW M-Performance diffuser.

cclcal · 11-09-2021, 10:01 AM

[QUOTE=Joe-BMW33;28232673]

Quote:

Originally Posted by cclcal

Not yet, still procrastinating on next steps, including considering the BMW M-Performance diffuser.

where you finding that one? OEM?

Joe-BMW33 · 11-09-2021, 10:04 AM

[QUOTE=cclcal;28233475]

Quote:

Originally Posted by Joe-BMW33

where you finding that one? OEM?

https://www.shopbmwusa.com/product/5...AR-BUMPER-TRIM

https://www.shopbmwusa.com/product/1...M,-MATTE-BLACK

Kineshi1 · 11-09-2021, 01:55 PM

Beautiful upgrade

cclcal · 11-09-2021, 09:32 PM

[QUOTE=Joe-BMW33;28233486]

Quote:

Originally Posted by cclcal

https://www.shopbmwusa.com/product/5...AR-BUMPER-TRIM

https://www.shopbmwusa.com/product/1...M,-MATTE-BLACK

will those fit the OEM exhaust tips of M550?

Joe-BMW33 · 11-10-2021, 12:41 AM

[QUOTE=cclcal;28235901]

Quote:

Originally Posted by Joe-BMW33

Quote:

Originally Posted by cclcal

https://www.shopbmwusa.com/product/5...AR-BUMPER-TRIM

https://www.shopbmwusa.com/product/1...M,-MATTE-BLACK

will those fit the OEM exhaust tips of M550?

Yes, that's specifically the setup they are made for. I've seen pics of the CF one from someone on one of the G30 Facebook groups. I'm not into CF and not would I spend $1,700 on it. $700 maybe for the black one, which yours is pretty much a replica of.

Joe-BMW33 · 11-10-2021, 05:40 AM

[QUOTE=cclcal;28232254]

Quote:

Originally Posted by Joe-BMW33

did you end up buying one?

Ok, I am about to pull the trigger on the one you got. What the hell. Question, how would you rate the thickness and quality of the material of the OEM Cerium removed vs. the eBay one?

Joe-BMW33 · 11-10-2021, 07:59 AM

[QUOTE=cclcal;28202437]

Quote:

Originally Posted by Joe-BMW33

Nice, looking forward to pics. So the OEM diffuser just pulls off or are there screws holding it down?

Edit: Never mind, got it:

hey guys, so ive installed the new diffuser from ebay. fits great, color is great, wife likes the look and color better than OEM.
1. I installed left side 1st, right gap is a little wider than left, i tried moving shifting diffuser and it helped a little, moving actual bumper helps too.
2. When removing the OEM diffuser, there are total of 10 screws, use a 8mm socket. After removing all screws, just gently pull on diffuser, pushing on bumper and it comes right out. There are four clips on bottom that comes out easily by pushing up. New diffuser, there are 9 screw holes, but only used 7. The clips line up with bumper. However, there are two screw holes that cannot be lined up to heatshield.

any questions?

What's on the ground in your first pic with 10 screws laying on it? Is this a bottom plate and if so, does it go back with the new one?

cclcal · 11-10-2021, 11:40 AM

[QUOTE=Joe-BMW33;28236827]

Quote:

Originally Posted by cclcal

What's on the ground in your first pic with 10 screws laying on it? Is this a bottom plate and if so, does it go back with the new one?

not sure what that part is called but it only goes w OEM diffuser, it connects diffuser to heat shield. not needed for new one since the diffuser kinda wraps under and connects to heat shield.

cclcal · 11-10-2021, 11:41 AM

[QUOTE=Joe-BMW33;28236519]

Quote:

Originally Posted by cclcal

Ok, I am about to pull the trigger on the one you got. What the hell. Question, how would you rate the thickness and quality of the material of the OEM Cerium removed vs. the eBay one?

honestly, the quality is very good. very similar in thickness and flexibility.
like i said before, the only issue was w the paint issue but not a deal breaker as it is not noticeable at all.

go buy it!

Joe-BMW33 · 11-10-2021, 02:19 PM

[QUOTE=cclcal;28237549]

Quote:

Originally Posted by Joe-BMW33

honestly, the quality is very good. very similar in thickness and flexibility.
like i said before, the only issue was w the paint issue but not a deal breaker as it is not noticeable at all.

go buy it!

Done!

Joe-BMW33 · 11-11-2021, 12:43 PM

Anyone had any issues with any of these aftermarket diffusers interfering with the kick under to open trunk function?

cclcal · 11-11-2021, 02:15 PM

Quote:

Originally Posted by Joe-BMW33

Anyone had any issues with any of these aftermarket diffusers interfering with the kick under to open trunk function?

mine works fine

Joe-BMW33 · 11-17-2021, 05:38 PM

Quote:

Originally Posted by cclcal

Quote:

Originally Posted by Joe-BMW33

Anyone had any issues with any of these aftermarket diffusers interfering with the kick under to open trunk function?

mine works fine

It came today and I inspected it. It looks to be in very good shape and decent quality for the money.

I know this will be easy to figure out once I remove the stock one and check things out, but the holes that are stacked, does the screw pass through all three of these and then into the body or does the underbody somehow wedge between one of the layers? I'm probably being confusing. I guess an easier way to ask is, does the screw pass through all the diffuser holes and then into the body?

Joe-BMW33 · 11-18-2021, 01:23 PM

I like it. Pretty easy install. I only had 7 screw holes and the two you referenced didn't line up as well. So only 5 screws out of 10. I'm guessing you meant 7 and not 9 or mine is just a bit different. Three across the front middle and two conners.

The kick to open works, but definitely not as well. Really only works from the right side to the left of the right tailpipe.

SctsOut06 · 11-18-2021, 06:38 PM

Quote:

Originally Posted by Joe-BMW33

I like it. Pretty easy install. I only had 7 screw holes and the two you referenced didn't line up as well. So only 5 screws out of 10. I'm guessing you meant 7 and not 9 or mine is just a bit different. Three across the front middle and two conners.

The kick to open works, but definitely not as well. Really only works from the right side to the left of the right tailpipe.

Looks great!

10-31-2021, 02:04 PM	#45
cclcal Private First Class 46 Rep 122 Posts Drives: BMW M550i, H Palisade, Tesla 3 Join Date: Oct 2021 Location: San Diego iTrader: (0)	[QUOTE=Joe-BMW33;28201270]Nice, looking forward to pics. So the OEM diffuser just pulls off or are there screws holding it down? Edit: Never mind, got it: hey guys, so ive installed the new diffuser from ebay. fits great, color is great, wife likes the look and color better than OEM. 1. I installed left side 1st, right gap is a little wider than left, i tried moving shifting diffuser and it helped a little, moving actual bumper helps too. 2. When removing the OEM diffuser, there are total of 10 screws, use a 8mm socket. After removing all screws, just gently pull on diffuser, pushing on bumper and it comes right out. There are four clips on bottom that comes out easily by pushing up. New diffuser, there are 9 screw holes, but only used 7. The clips line up with bumper. However, there are two screw holes that cannot be lined up to heatshield. any questions? Attached Images
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11-01-2021, 05:41 AM	#47
Joe-BMW33 Major General 7323 Rep 6,738 Posts Drives: '18 M550i\|'21 X5\|'03 540i Join Date: Apr 2021 Location: Boston iTrader: (1) Garage List 2013 VW Tiguan [0.00] 2015 Infiniti QX60 [0.00] 2021 BMW X5 [0.00] 2003 BMW 540i [0.00] 2018 BMW M550 [10.00]	I did a little before and after using your pic and mine. Attached Images __________________ 2018 M550ix\|Carbon Black\|Dinan Modifications\|2003 540i\|Jet Black\|M-Sport\|2021 X5 Mineral White Prior BMW's: 1987 325e\|1993 740i\|1998 740il\|2001 530i\|2002 745li\|2007 750li\|2006 750li\|2001 530i\|2012 535xi\|
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11-09-2021, 01:55 PM	#54
Kineshi1 New Member 0 Rep 15 Posts Drives: bmw M550i Join Date: Oct 2021 Location: ny iTrader: (0)	Beautiful upgrade
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11-11-2021, 12:43 PM	#62
Joe-BMW33 Major General 7323 Rep 6,738 Posts Drives: '18 M550i\|'21 X5\|'03 540i Join Date: Apr 2021 Location: Boston iTrader: (1) Garage List 2013 VW Tiguan [0.00] 2015 Infiniti QX60 [0.00] 2021 BMW X5 [0.00] 2003 BMW 540i [0.00] 2018 BMW M550 [10.00]	Anyone had any issues with any of these aftermarket diffusers interfering with the kick under to open trunk function? __________________ 2018 M550ix\|Carbon Black\|Dinan Modifications\|2003 540i\|Jet Black\|M-Sport\|2021 X5 Mineral White Prior BMW's: 1987 325e\|1993 740i\|1998 740il\|2001 530i\|2002 745li\|2007 750li\|2006 750li\|2001 530i\|2012 535xi\|
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11-18-2021, 01:23 PM	#65
Joe-BMW33 Major General 7323 Rep 6,738 Posts Drives: '18 M550i\|'21 X5\|'03 540i Join Date: Apr 2021 Location: Boston iTrader: (1) Garage List 2013 VW Tiguan [0.00] 2015 Infiniti QX60 [0.00] 2021 BMW X5 [0.00] 2003 BMW 540i [0.00] 2018 BMW M550 [10.00]	I like it. Pretty easy install. I only had 7 screw holes and the two you referenced didn't line up as well. So only 5 screws out of 10. I'm guessing you meant 7 and not 9 or mine is just a bit different. Three across the front middle and two conners. The kick to open works, but definitely not as well. Really only works from the right side to the left of the right tailpipe. Attached Images __________________ 2018 M550ix\|Carbon Black\|Dinan Modifications\|2003 540i\|Jet Black\|M-Sport\|2021 X5 Mineral White Prior BMW's: 1987 325e\|1993 740i\|1998 740il\|2001 530i\|2002 745li\|2007 750li\|2006 750li\|2001 530i\|2012 535xi\|
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