How to Install a Carbon Fiber Rear Diffuser on Audi S3 8V


Registered User
Over the past year, quite a few people have asked me about putting together a DIY for the installation of the S3's rear diffuser. This past weekend, I was lucky enough to have a local S3 owner loan me his car to do the installation.

A big thanks to:
- Steve Wang for your car and help
- Thomas Emmanuele for the guidance you gave me

The installation is a bit more on the tricky side, but it's 100% doable.

Feel free to subscribe, Like! and share my video. As always, thank you for your support! Enjoy guys!



Well-Known Member
Silver Supporter
Wow - very professional and clear video, although slight shame we didn't get to see the actual bumper removal itself, but explained very clearly. I was surprised that the whole bumper has to be removed, which makes it a much bigger job than it would have been, but then manufacturers aren't thinking about these kind of aftermarket mods when designing such parts. Thanks.


Registered User
OCDaveS3, that's one part we did not manage to record. Once the side clips are undone and the 4-10mm bolts are removed, the bumper will literally, pull off without resistance.