GetBMWParts
BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read

Go Back   BMW M3 and BMW M4 Forum > BMW F80 M3 / F82 M4 Technical Topics > DIY and Coding Discussions

Post Reply
 
Thread Tools Search this Thread
      08-22-2014, 06:18 PM   #1
Ryan@IND
Ryan@IND's Avatar
United_States
1751
Rep
7,649
Posts

Drives: ACR
Join Date: Mar 2008
Location: Chicago

iTrader: (18)

F8X M3/M4 M Performance Rear Diffuser DIY

The BMW Performance division continues to expand their offerings all the while keying into the desires of BMW enthusiasts around the world. The F8X M3/M4 Performance parts are a more aggressive option created by the designers at BMW ///M. The aero options from the Performance division , design by BMW ///M provide a more sporty and aggressive look all the while maintaining or accenting the factory lines. The kit includes carbon fiber front splitters, trunk spoiler, rear diffuser, and of course mirror covers. All BMW Performance carbon parts are 2x2 weave.

Please contact an IND representative with further questions.


Step 1:
The OEM diffuser is secured by 2 screws and multiple clips on the upper partition. There are two screws in the center of the diffuser that must be removed, but are not important to the factory diffuser install. Using the 8mm socket remove all 4 screws

Step 2:
With the screws removed simply pull the diffuser from the bumper. The top clips do not require much pressure so no body tools are required.

Step 3:
With the diffuser removed it is now time for install of the M Performance carbon fiber diffuser. This piece utilizes all 4 8mm screws and the existing body clips. Step 1 of the installation is to lineup the clips and carefully press into place.

Step 4:
Now that the diffuser is loosely secured by the mounting tabs simply tighten the four 8mm screws.

Enjoy!














__________________
Appreciate 1
Foxyy266.50
      08-22-2014, 06:42 PM   #2
GOLFFRR
GOLFFRR's Avatar
10631
Rep
27,458
Posts

Drives: GOLFFRR cart
Join Date: Mar 2009
Location: we sell BMWs to "ALL" US states

iTrader: (4)

looks super easy, even I think I could manage this one, well maybe lol
__________________

BEFORE YOU BUY YOUR NEXT BMW, PM ME FIRST WE CAN HOOK YOU UP!
Jimmy Miller:Jimmym@bmwofcamarillo.com Cell:805-509-2048
If you have any issues getting a hold of Jimmy M PLEASE PM me, I'm available everyday till 545pm!
Appreciate 1
m3elmo49.50
      08-23-2014, 12:04 AM   #3
haynstyleM2
Major
haynstyleM2's Avatar
354
Rep
1,198
Posts

Drives: '24 M2
Join Date: Jul 2014
Location: Honolulu, HI

iTrader: (0)

looks awesome....i guess i know what to tell my wife what i want for christmas.....
Appreciate 0
      08-23-2014, 12:18 AM   #4
Sir Loin
M3AT LOVER
Sir Loin's Avatar
United_States
322
Rep
1,853
Posts

Drives: Silverstone F80 M3
Join Date: Aug 2013
Location: Seattle

iTrader: (0)

This diffuser looks so hot. I may have to swing for it... later....
__________________
2015 F80 M3 | SSII ext SO int | M-DCT | 19" Black Wheels
Appreciate 1
      08-23-2014, 03:42 PM   #5
Keto
Lieutenant Colonel
Keto's Avatar
United_States
73
Rep
1,603
Posts

Drives: F80 M3
Join Date: Jul 2007
Location: WHO DAT NATION

iTrader: (1)

Garage List
2015 BMW M3  [10.00]
I love the diffuser! Wish I liked the splitters/lip.
__________________
2015 SO/SO MT M3 :: Exec : Lighting : Adaptive : HK : CF trim : Full leather : DAP : Black 19's : sunshade
Crystalline tint 40%/70% on windshield : M performance mirrors, spoiler, splitters : Status Gruppe CF lip : RKP diffuser : Fully dechromed
Bavsound Stage 1 : V1 Savvy hardwired : Self-coded
Appreciate 0
      08-24-2014, 08:18 AM   #6
Vectors2final
Brigadier General
Vectors2final's Avatar
United_States
1174
Rep
3,239
Posts

Drives: 2018 F80 YMB/SS ZCP
Join Date: May 2011
Location: Austin, Tx

iTrader: (0)

Quote:
Originally Posted by Sir Loin View Post
This diffuser looks so hot. I may have to swing for it... later....
Yeah, I have to do it after wheels, coils and other minor mods.


Once you figure in the diffuser and the other bits, you're in the 2k range just for some CF pieces. I'm sure some other parts will come out soon, which is probably the only benefit of being stuck in Korea right now.
Appreciate 0
      08-29-2014, 10:45 AM   #7
Carl L
Major
Carl L's Avatar
196
Rep
1,248
Posts

Drives: '15 M3
Join Date: Aug 2012
Location: West Coast

iTrader: (0)

Great pics, IND. Do you have any more of the underside of the car you'd be willing to share? It's a work of art under there from what I can remember and your camera work looks to be great.
Appreciate 0
      09-06-2014, 11:01 AM   #8
Sir Loin
M3AT LOVER
Sir Loin's Avatar
United_States
322
Rep
1,853
Posts

Drives: Silverstone F80 M3
Join Date: Aug 2013
Location: Seattle

iTrader: (0)

A few people have said once the CF diffuser is installed, you can no longer kick under the car to open the trunk.

Does the "kick-motion-to-open trunk" comfort access still work on your car after you installed the diffuser? Thanks.
__________________
2015 F80 M3 | SSII ext SO int | M-DCT | 19" Black Wheels
Appreciate 0
      09-07-2014, 09:41 AM   #9
Dasm3nd
Private First Class
Dasm3nd's Avatar
29
Rep
124
Posts

Drives: 2015 YMB F80
Join Date: Jan 2014
Location: North Texas

iTrader: (0)

Quote:
Originally Posted by Sir Loin
A few people have said once the CF diffuser is installed, you can no longer kick under the car to open the trunk.

Does the "kick-motion-to-open trunk" comfort access still work on your car after you installed the diffuser? Thanks.
No it is not functional. Sensors are obstructed.
Appreciate 0
      09-08-2014, 02:02 PM   #10
Ryan@IND
Ryan@IND's Avatar
United_States
1751
Rep
7,649
Posts

Drives: ACR
Join Date: Mar 2008
Location: Chicago

iTrader: (18)

Quote:
Originally Posted by Sir Loin View Post
A few people have said once the CF diffuser is installed, you can no longer kick under the car to open the trunk.

Does the "kick-motion-to-open trunk" comfort access still work on your car after you installed the diffuser? Thanks.
That is correct, the kick-motion will no longer open the trunk.
__________________
Appreciate 0
      09-08-2014, 02:08 PM   #11
Sir Loin
M3AT LOVER
Sir Loin's Avatar
United_States
322
Rep
1,853
Posts

Drives: Silverstone F80 M3
Join Date: Aug 2013
Location: Seattle

iTrader: (0)

Quote:
Originally Posted by Andrew@IND View Post
That is correct, the kick-motion will no longer open the trunk.
Aw, shucks...
__________________
2015 F80 M3 | SSII ext SO int | M-DCT | 19" Black Wheels
Appreciate 0
      09-12-2015, 05:23 PM   #12
V3rbatim
Captain
164
Rep
534
Posts

Drives: 2016 m3
Join Date: Jun 2015
Location: NJ

iTrader: (0)

Looks kind of nice without the diffuser. Just have to clear all the clutter under the diffuser though.
__________________
2016 m3
2012 yamaha r1
Appreciate 0
      09-14-2015, 12:30 PM   #13
Gstone
Lieutenant
142
Rep
555
Posts

Drives: '18 GT350, '15 M4 sold
Join Date: Sep 2014
Location: NY Burbs

iTrader: (0)

great tool.
Do you have any step by step stuff on f82 rear spoiler install? Is this an easy DIY? Been thinking of adding one.
Appreciate 0
      04-26-2016, 06:52 PM   #14
SD ///M4
///Multiple
SD ///M4's Avatar
United_States
2987
Rep
4,247
Posts

Drives: M4 Coupe | M3 | Z4M Roadster
Join Date: Jan 2011
Location: San Diego, CA

iTrader: (1)

Garage List
Quote:
Originally Posted by Ryan@IND View Post
That is correct, the kick-motion will no longer open the trunk.
Resurrecting an old thread...

I remember a post in another thread that the kick-motion sensor can be relocated, allowing it to work with this diffuser. Has anyone done this or have a DIY or pictures showing how this is done?
__________________
The Coupe: 2016 M4 | Sakhir Orange | Black Full Merino Leather | CF Trim | M-DCT | More | ED 5/13/16
The Sedan: 2018 M3 | San Marino Blue | Black Full Merino Leather | CF Trim | M-DCT | ZCP | ED 7/18/18
The Roadster: 2006 Z4 | Interlagos Blue | Black Extended Nappa Leather | Carbon Leather Trim | Purchased 7/19/12

Appreciate 0
      05-03-2016, 12:44 PM   #15
bd307
Chef
bd307's Avatar
927
Rep
1,059
Posts

Drives: Things with wheels or no wheel
Join Date: Dec 2014
Location: Area 51

iTrader: (0)

Quote:
Originally Posted by SD ///M4 View Post
Resurrecting an old thread...

I remember a post in another thread that the kick-motion sensor can be relocated, allowing it to work with this diffuser. Has anyone done this or have a DIY or pictures showing how this is done?
Also interested knowing how to relocate that sensor. Did you find out anything?
Appreciate 0
      06-19-2016, 02:32 AM   #16
Chopstick217
First Lieutenant
Chopstick217's Avatar
United_States
13
Rep
305
Posts

Drives: BMW 2020 M8 F92 Donington Grey
Join Date: Dec 2009
Location: Irvine, CA

iTrader: (6)

Also interested about sensor
__________________
2020 Donington Grey BMW M8 Coupe Competition
Appreciate 0
      06-20-2016, 12:03 PM   #17
SD ///M4
///Multiple
SD ///M4's Avatar
United_States
2987
Rep
4,247
Posts

Drives: M4 Coupe | M3 | Z4M Roadster
Join Date: Jan 2011
Location: San Diego, CA

iTrader: (1)

Garage List
So no one has any information on where the sensor is located and how to relocate it?
__________________
The Coupe: 2016 M4 | Sakhir Orange | Black Full Merino Leather | CF Trim | M-DCT | More | ED 5/13/16
The Sedan: 2018 M3 | San Marino Blue | Black Full Merino Leather | CF Trim | M-DCT | ZCP | ED 7/18/18
The Roadster: 2006 Z4 | Interlagos Blue | Black Extended Nappa Leather | Carbon Leather Trim | Purchased 7/19/12

Appreciate 0
      06-29-2016, 04:17 PM   #18
MN2///M
Captain
MN2///M's Avatar
United_States
520
Rep
865
Posts

Drives: very fast!
Join Date: Jan 2016
Location: Colorado Springs

iTrader: (0)

Quote:
Originally Posted by SD ///M4 View Post
Resurrecting an old thread...

I remember a post in another thread that the kick-motion sensor can be relocated, allowing it to work with this diffuser. Has anyone done this or have a DIY or pictures showing how this is done?
Quote:
Originally Posted by bd307 View Post
Also interested knowing how to relocate that sensor. Did you find out anything?
Quote:
Originally Posted by Chopstick217 View Post
Also interested about sensor
Here is the Thread you are looking for:
http://f80.bimmerpost.com/forums/sho....php?t=1194668
__________________
2003 BMW 330i
2016 BMW M4 - ED May 2016, PCD Aug 2016
2017 X5 xDrive35i - PCD Jan2017
Appreciate 1
SD ///M42986.50
      11-16-2016, 06:22 PM   #19
bigwilliel
New Member
2
Rep
9
Posts

Drives: 2022 BMW M3
Join Date: Nov 2016
Location: Fort Lauderdale, Florida

iTrader: (0)

thanks for the tutorial!
Appreciate 0
      03-09-2017, 06:31 PM   #20
mdefalco25
Captain
mdefalco25's Avatar
United_States
197
Rep
710
Posts

Drives: 03 E46 M3
Join Date: Nov 2012
Location: Normal, IL

iTrader: (3)

I can't get the bottom screw holes to line up. What am I doing wrong? Sigh.
Appreciate 0
      03-10-2017, 05:44 PM   #21
LukeM15
Captain
LukeM15's Avatar
United_States
559
Rep
991
Posts

Drives: M3 G80 Comp Xdrive
Join Date: Nov 2016
Location: Maryland

iTrader: (4)

Great write up!!! I like it
Appreciate 0
      03-22-2017, 03:54 PM   #22
SD ///M4
///Multiple
SD ///M4's Avatar
United_States
2987
Rep
4,247
Posts

Drives: M4 Coupe | M3 | Z4M Roadster
Join Date: Jan 2011
Location: San Diego, CA

iTrader: (1)

Garage List
Quote:
Originally Posted by RoadRunner///M View Post
Is the fitment meant to be this bad under on the 2 centre screws?
I just went out and stuck my phone camera under the bumper and took a picture that looks pretty much like yours.

I just installed my diffuser last week and I remember that the heat shield is kind of loose fitting. After I removed the stock piece, it seemed like the heat shield ended up on the wrong side of the plastic/nylon piece, which has the mounting nut, and I had to move it so it was between the plastic piece and the tab of the diffuser.

Per the installation instructions:
Ensure that the screws (1) are screwed first through carbon rear diffuser AA and then through the heat shield into the plastic part
__________________
The Coupe: 2016 M4 | Sakhir Orange | Black Full Merino Leather | CF Trim | M-DCT | More | ED 5/13/16
The Sedan: 2018 M3 | San Marino Blue | Black Full Merino Leather | CF Trim | M-DCT | ZCP | ED 7/18/18
The Roadster: 2006 Z4 | Interlagos Blue | Black Extended Nappa Leather | Carbon Leather Trim | Purchased 7/19/12

Appreciate 0
Post Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 09:02 PM.




f80post
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST