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      12-16-2015, 09:27 AM   #1
drbru
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Removal of rear centre diffuser

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Hi all

Im hoping someone can give me some guidance in removing the standard rear centre diffuser as im hoping to install a challenge centre diffuser in its place

I understand that there are just three plastic rivet things that need to be pulled out and the rest is secured by plastic clips...

Anything else I need to know...?

Cheers
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      12-17-2015, 08:29 PM   #2
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Quote:
Originally Posted by drbru View Post
Hi all

Im hoping someone can give me some guidance in removing the standard rear centre diffuser as im hoping to install a challenge centre diffuser in its place

I understand that there are just three plastic rivet things that need to be pulled out and the rest is secured by plastic clips...

Anything else I need to know...?

Cheers
I did this a while ago and I will tell you (sorry if i miss a step)

There are 3 Torx screws (black) in the back loosen those up all the way and tere are 2 plastic tabs on each side (4 total) take those out.

Then start from either side and pull the diffuser out down and out and it should unclip slowly. when the whole diffuser comes out the middle plastic piece will be tricky and be careful not to break the plastic tabs but they should unclip if you pull the plastic piece and the challenge piece goes in and clips in.

and you put it back together and enjoy!
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      12-18-2015, 04:16 PM   #3
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Thanks mate, so your suggestion is to take the whole diffuser off and not just the centre piece?
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      12-21-2015, 01:09 PM   #4
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Quote:
Originally Posted by drbru View Post
Thanks mate, so your suggestion is to take the whole diffuser off and not just the centre piece?
You have to take the whole thing off, you cant just take the center off.
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      12-21-2015, 11:08 PM   #5
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Quote:
Originally Posted by speed808ix
Quote:
Originally Posted by drbru View Post
Thanks mate, so your suggestion is to take the whole diffuser off and not just the centre piece?
You have to take the whole thing off, you cant just take the center off.
I just replaced my center diffuser without removing the whole thing, so yes, it can be done. I used a bondo spreader and some nylon panel tools on each clip, one at a time.

Brad
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      12-24-2015, 01:11 PM   #6
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Quote:
Originally Posted by evilb View Post
I just replaced my center diffuser without removing the whole thing, so yes, it can be done. I used a bondo spreader and some nylon panel tools on each clip, one at a time.

Brad
Yeah I didnt want to snap off the re diffuser and be really pissed so I took it all off haha
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      12-24-2015, 01:58 PM   #7
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Quote:
Originally Posted by speed808ix
Quote:
Originally Posted by evilb View Post
I just replaced my center diffuser without removing the whole thing, so yes, it can be done. I used a bondo spreader and some nylon panel tools on each clip, one at a time.

Brad
Yeah I didnt want to snap off the re diffuser and be really pissed so I took it all off haha
In hindsight I'm sure your method was easier
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      03-25-2016, 07:56 PM   #8
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thought i'd comment.. just did this last night in under 15 minutes the other night with BMW Motorsports piece..

Gentleman Jack on Rocks is optional

I used a panel removal tool to remove 4 plastic clips holding the center section of diffuser. In the middle you have three heavy duty bolts, will need star impact socket to get them off and little bit off pressure as they have thread lock.. Once hardware is out, simply wiggle the unit down and inward towards front of the car to slowly release plastic tabs holding it to upper section of diffuser.. (painted part).

The OEM unit fit like a glove, align it all back together and reinstall the hardware.. I WOULD RECOMMEND GETTING NEOPRENE BLACK WASHERS for heavy duty bolts so you dont have direct bolt to carbon contact..






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      04-05-2016, 01:16 AM   #9
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What size were the torx bits?
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      04-05-2016, 10:03 AM   #10
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Quote:
Originally Posted by apexlocator
What size were the torx bits?
Should be a t10 if I remember correctly
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      04-08-2016, 12:47 AM   #11
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Well just installed today....perfect fitment, about 20 minutes. ...T27 bit for me.
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      04-27-2016, 09:33 PM   #12
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T27 indeed. Took me about 20 mins also. I had to use a nylon prybar to unclip the diffuser, took some force actually. The CF diffuser clipped in like butter though.
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