I'm looking at getting a Boot Lip Spolier.
AUDI A4 B8 BOOT SPOILER (CARA) PART OF BODY KIT BODYKIT PU | eBay
I don't know if I should stick to a body coloured one or a carbon fibre one:
AUDI A4 B8 CARBON BOOT SPOILER J PART OF BODYKIT | eBay
I've always fancied a crabon fibre one after seeing them on the old A4 DTM Special Editions.