Adding a CF rear diffuser

titan7 · 03-28-2018, 11:24 AM

Okay might be a dumb question but can just a rear diffuser be added? I love the look. Not a huge fan of the front splitter, don’t want loose clearance or alter anything. Appears the rear diffuser is a OEM bolt on item.

Thoughts?

G-son · 03-28-2018, 02:05 PM

Sure you can, I did that on my F80. Go for it!

IND-Distribution · 03-29-2018, 09:07 AM

Yes, it is as simple as removing the factory one and installing any diffuser that you like.

Here is an install guide, we installed an RKP Carbon diffuser here.

Aapparition90 · 03-29-2018, 09:10 AM

It did not even take my shop even 5 minutes to install it lol . Oem cf diffuser looks good and no risks what so ever. chances are your exhaust tips will be lower than the lowest part of your cf diffuser fin so no clearance issues.. even if not the case go ahead and install it.

Agent - ///M · 03-29-2018, 09:22 AM

Super easy - go for it!

uniqueMR · 03-29-2018, 10:18 AM

ellipsis212 · 03-30-2018, 07:41 AM

I just removed a mint condition OEM cf diffuser for a different one. It's a 5 minute install.

PM me if you're in the market

titan7 · 04-06-2018, 11:26 AM

So which CF diffuser will be a perfect fit AND allow for the trunk opening function? It's my wife's car and she is more interested in the trunk opening vs looks so appears that the OME CF diffuser is out.

Jockey · 04-06-2018, 12:05 PM

If you can use a screwdriver you can install the diffuser. It's that easy

titan7 · 04-06-2018, 01:36 PM

Not concerned about installing it, just need to know which one will allow for the trunk sensors to still work.

GregM4 · 04-07-2018, 02:28 AM

Titan7, I am seeking info on a CF diffuser which will 100% not interfere with the boot opening function. I cannot seem to find one so far. Maybe it is something to do with the CF which interferes not sure. I have even read that the BME OEM CF one at times stops the boot opening function working.

EstrlM3 · 04-07-2018, 03:17 PM

Install two plastic push rivets on center holes for oem diffuser and it should work

titan7 · 04-16-2018, 08:28 PM

So I have a line on a OEM CF diffuser, removing the four bolts does not scare me but is there a special way to remove and reinstall the diffuser, having never done it before I just don’t want to scratch something or break a tab or whatever. I saw the video but then read about several people having fit issues with the BMW OEM CF version and saying bolts don’t line up? Thoughts?

Thx

03-28-2018, 11:24 AM	#1
titan7 Private First Class 39 Rep 149 Posts Drives: X3 M40 Join Date: Mar 2011 Location: NW Peoria, AZ iTrader: (1)	Adding a CF rear diffuser Okay might be a dumb question but can just a rear diffuser be added? I love the look. Not a huge fan of the front splitter, don’t want loose clearance or alter anything. Appears the rear diffuser is a OEM bolt on item. Thoughts? __________________ Current Rides : 2024 X3 M40, 2021 Corolla Hybrid Past: 2008 328i, 2008 535i, 2012 135 vert, 2015 m235 vert, 2017 Porsche 911, 2018 M4 ZCP, 2021 X3 M40
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03-28-2018, 02:05 PM	#2
G-son Private First Class 22 Rep 131 Posts Drives: 2019 F90 M5 Competition Join Date: May 2006 Location: Sweden iTrader: (0)	Sure you can, I did that on my F80. Go for it!
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03-29-2018, 09:07 AM	#3
IND-Distribution BimmerPost Supporting Vendor 9587 Rep 10,878 Posts Drives: G82 M4 / G87 M2 Join Date: Oct 2006 Location: Chicago iTrader: (3)	Yes, it is as simple as removing the factory one and installing any diffuser that you like. Here is an install guide, we installed an RKP Carbon diffuser here. __________________ IND DISTRIBUTION \| 866-963-4520 • INSTAGRAM • YOUTUBE • FACEBOOK • FLICKR
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03-29-2018, 09:10 AM	#4
Aapparition90 Captain 193 Rep 806 Posts Drives: 2016 lci m3 mw Join Date: Mar 2014 Location: sydney iTrader: (0) Garage List 2014 bmw 328i [0.00] 2012 bmw 328i [0.00]	It did not even take my shop even 5 minutes to install it lol . Oem cf diffuser looks good and no risks what so ever. chances are your exhaust tips will be lower than the lowest part of your cf diffuser fin so no clearance issues.. even if not the case go ahead and install it. __________________ f80 m3 lci mw
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03-29-2018, 09:22 AM	#5
Agent - ///M Captain 187 Rep 757 Posts Drives: 2018 F80 Comp; Black Sapphire Join Date: Jan 2016 Location: West Palm Beach, FL iTrader: (2)	Super easy - go for it! __________________ Why put off for tomorrow, what can be done today?
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03-29-2018, 10:18 AM	#6
uniqueMR Colonel 1883 Rep 2,924 Posts Drives: ... Join Date: Dec 2017 Location: USA iTrader: (0)	__________________ Currently: '24 Mercedes G63 \| '24 Porsche GT3 RS \| '24 Volkswagen GTI Previous BMWs: 340i, 740i, 745Li, M3, M4 Previous Others: Audi, Ducati, Honda, Infiniti, Land Rover, Mercedes-Benz, MINI, Mitsubishi, Porsche, Toyota, Volkswagen
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03-30-2018, 07:41 AM	#7
ellipsis212 Colonel 1618 Rep 2,161 Posts Drives: 2017 M3 Join Date: Jun 2009 Location: RVA iTrader: (5) Garage List 2018 BMW M3 [0.00]	I just removed a mint condition OEM cf diffuser for a different one. It's a 5 minute install. PM me if you're in the market
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04-06-2018, 11:26 AM	#8
titan7 Private First Class 39 Rep 149 Posts Drives: X3 M40 Join Date: Mar 2011 Location: NW Peoria, AZ iTrader: (1)	So which CF diffuser will be a perfect fit AND allow for the trunk opening function? It's my wife's car and she is more interested in the trunk opening vs looks so appears that the OME CF diffuser is out. __________________ Current Rides : 2024 X3 M40, 2021 Corolla Hybrid Past: 2008 328i, 2008 535i, 2012 135 vert, 2015 m235 vert, 2017 Porsche 911, 2018 M4 ZCP, 2021 X3 M40
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04-06-2018, 12:05 PM	#9
Jockey Brigadier General 3451 Rep 4,983 Posts Drives: 992 C4S Join Date: Mar 2008 Location: Park City, UT iTrader: (1)	If you can use a screwdriver you can install the diffuser. It's that easy
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04-06-2018, 01:36 PM	#10
titan7 Private First Class 39 Rep 149 Posts Drives: X3 M40 Join Date: Mar 2011 Location: NW Peoria, AZ iTrader: (1)	Not concerned about installing it, just need to know which one will allow for the trunk sensors to still work. __________________ Current Rides : 2024 X3 M40, 2021 Corolla Hybrid Past: 2008 328i, 2008 535i, 2012 135 vert, 2015 m235 vert, 2017 Porsche 911, 2018 M4 ZCP, 2021 X3 M40
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04-07-2018, 02:28 AM	#11
GregM4 Captain 1317 Rep 817 Posts Drives: VERDE ERMES G82 M4 Xdrive Join Date: Oct 2015 Location: Queensland, Australia iTrader: (0)	Titan7, I am seeking info on a CF diffuser which will 100% not interfere with the boot opening function. I cannot seem to find one so far. Maybe it is something to do with the CF which interferes not sure. I have even read that the BME OEM CF one at times stops the boot opening function working.
	Appreciate 0 Quote

04-07-2018, 03:17 PM	#12
EstrlM3 Second Lieutenant 66 Rep 276 Posts Drives: BSM 335i Sedan Join Date: Aug 2010 Location: So Cal iTrader: (0)	Install two plastic push rivets on center holes for oem diffuser and it should work
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04-16-2018, 08:28 PM	#13
titan7 Private First Class 39 Rep 149 Posts Drives: X3 M40 Join Date: Mar 2011 Location: NW Peoria, AZ iTrader: (1)	So I have a line on a OEM CF diffuser, removing the four bolts does not scare me but is there a special way to remove and reinstall the diffuser, having never done it before I just don’t want to scratch something or break a tab or whatever. I saw the video but then read about several people having fit issues with the BMW OEM CF version and saying bolts don’t line up? Thoughts? Thx __________________ Current Rides : 2024 X3 M40, 2021 Corolla Hybrid Past: 2008 328i, 2008 535i, 2012 135 vert, 2015 m235 vert, 2017 Porsche 911, 2018 M4 ZCP, 2021 X3 M40
	Appreciate 0 Quote