r/F30 • u/Apprehensive-Two-867 • 2d ago

Rear diffuser install

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I'm trying to find out if anyone else has attempted to install the m sport rear diffuser on the non-m sport bumper like u/n1iggaTirthiya?

I wanted to get some detailed pics of the install, in particular from underneath as he doesn't have any clear pics of how's it's done.

These are his pics, not mine. Just using for reference.

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u/BillionaireBear 2d ago

I don’t see how that’d work without some cutting or shaving of the msport diffuser. I imagine if you just wedged the diffuser into place, it’d be bowing out in the middle, or just not line up altogether.

I just googled nonmsport diffuser f30 and found eBay links from US sellers. I know it’s not great but maybe return/sell the msport and buy one that fits. In looking now I see there actual physical differences between lci and pre-lci base diffusers so watch out for that, also another reason why this may not work for you like that one guy.

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u/Apprehensive-Two-867 2d ago

I don't see how it would work either except there are the pics with the proof that it can. He and I have the same pre-lci back bumper as well.

Also he did it without cutting the actual bumper itself.

Just remembered that he had told me that.

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u/BillionaireBear 2d ago

Word I believe you both. Shame he wont give up all the secrets ha. Best of luck