Any good DIY guides on installing the M-performance diffuser?

Hoonigan · 02-26-2022, 08:18 AM

This would be for an LCI (not sure if things are different for a pre-LCI)

DryBark · 02-26-2022, 09:42 AM

My BMW dealer only charged me for 30min labor for install. Definitely worth it over tearing the bumper cover off yourself.

trev230 · 02-26-2022, 10:38 AM

Quote:

Originally Posted by DryBark

My BMW dealer only charged me for 30min labor for install. Definitely worth it over tearing the bumper cover off yourself.

Only the lower piece of the bumper needs to come off. I have done two of these on my pre-LCI and now my LCI. It’s very easy. The longest part of the process is removing bolts, clips, and then making sure all of the tabs for the diffuser are lined up. You remove and remount the diffuser with the lower bumper cover/trim piece off the car. With that being said if someone is only charging 30 minutes of labor for this job that sounds like a deal. Took me around 45-60 minutes each time.

PunjabiM3 · 02-26-2022, 11:12 AM

I did it in 30-45 min in my garage. Its super easy.

Jakerx · 02-26-2022, 12:29 PM

It’s easy. Here’s a good video:

Hoonigan · 02-26-2022, 02:54 PM

Thanks all, I was finally able to figure it out. The evolve video helps with just understanding where/how to manipulate the tabs. I would say 45 min all in, with just a socket and a pry tool

RalphT5 · 10-21-2022, 04:56 PM

I'd agree. The worst part was getting the tabs to release on the underside of the diffuser to remove the lower part of the bumper cover. Once those released, I was home free.

Hoonigan · 10-21-2022, 07:17 PM

Quote:

Originally Posted by RalphT5

I'd agree. The worst part was getting the tabs to release on the underside of the diffuser to remove the lower part of the bumper cover. Once those released, I was home free.

What a gorgeous color!

NCRob · 10-22-2022, 05:57 AM

Quote:

Originally Posted by RalphT5

I'd agree. The worst part was getting the tabs to release on the underside of the diffuser to remove the lower part of the bumper cover. Once those released, I was home free.

Total Badass!

Lionborn28 · Today, 08:41 AM

Hello All,

I am new to the forum, and wanted to ask if anyone knows how to wire up diffuser light to the braking light system on my 2018 BMW M5 F90. I have my new diffuser installed but not sure how to wire it up. Any help is heatedly appreciated.
Thanks.

916_M5 · Today, 01:50 PM

It was straightforward. Should take you about 10 to 15 minutes to complete this job. Everyone here outlined the proper steps

02-26-2022, 08:18 AM	#1
Hoonigan Captain 235 Rep 622 Posts Drives: 991TT, F90 M5C, R230 SL55 AMG Join Date: Sep 2013 Location: Morristown iTrader: (0)	Any good DIY guides on installing the M-performance diffuser? This would be for an LCI (not sure if things are different for a pre-LCI)
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02-26-2022, 09:42 AM	#2
DryBark Second Lieutenant 162 Rep 255 Posts Drives: M5 / X5 Join Date: Nov 2021 Location: Nova Scotia iTrader: (0) Garage List 2023 BMW X5 [0.00] 2018 BMW M5 [10.00]	My BMW dealer only charged me for 30min labor for install. Definitely worth it over tearing the bumper cover off yourself.
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02-26-2022, 11:12 AM	#4
PunjabiM3 Colonel 262 Rep 2,087 Posts Drives: M5 CS Join Date: Mar 2008 Location: Flower Mound, TX iTrader: (1)	I did it in 30-45 min in my garage. Its super easy. __________________ 2012 Audi R8 V10TT\| 6MT\| Suzuka Grey 2015 Ferrari 458 Speciale\| Rosso Scuderia 2020 BMW X7\| Mineral White 2024 718 GT4 RS \| Arctic Grey
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02-26-2022, 12:29 PM	#5
Jakerx Captain 760 Rep 812 Posts Drives: F90 Comp Join Date: Jul 2019 Location: USA iTrader: (0)	It’s easy. Here’s a good video:
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02-26-2022, 02:54 PM	#6
Hoonigan Captain 235 Rep 622 Posts Drives: 991TT, F90 M5C, R230 SL55 AMG Join Date: Sep 2013 Location: Morristown iTrader: (0)	Thanks all, I was finally able to figure it out. The evolve video helps with just understanding where/how to manipulate the tabs. I would say 45 min all in, with just a socket and a pry tool
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10-21-2022, 04:56 PM	#7
RalphT5 Private First Class 256 Rep 193 Posts Drives: 2023 F90 Join Date: Aug 2012 Location: Houston, TX iTrader: (0) Garage List [0.00]	I'd agree. The worst part was getting the tabs to release on the underside of the diffuser to remove the lower part of the bumper cover. Once those released, I was home free. Attached Images __________________ 2023 F90
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Today, 08:41 AM	#10
Lionborn28 Registered 0 Rep 2 Posts Drives: 2018 bmw M5 Join Date: Nov 2024 Location: perry, Oklahoma iTrader: (0)	Hello All, I am new to the forum, and wanted to ask if anyone knows how to wire up diffuser light to the braking light system on my 2018 BMW M5 F90. I have my new diffuser installed but not sure how to wire it up. Any help is heatedly appreciated. Thanks.
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Today, 01:50 PM	#11
916_M5 IG: @M5RCY_ 409 Rep 338 Posts Drives: BMW F90 M5 Join Date: Mar 2021 Location: Sacramento iTrader: (0)	It was straightforward. Should take you about 10 to 15 minutes to complete this job. Everyone here outlined the proper steps __________________ Autotecknic.com - code: M5RCY for 12% off Project Gamma - code: M5RCY for 5% off Dura-Coating - code: M5RCY for 20% off
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