This would be fun to have.

From the article:
With the base ABT Power kit, those numbers jump to an impressive 365hp and 339 lb-ft respectively, while if you really want to even more power, there’s the ABT Power S kit that gives the S3 395hp and 354 lb-ft – that’s more than the Audi RS3 Sportback’s yet which is rated at 362hp and 343 lb-ft torque.

Photos and article - Audi S3 Sedan by ABT has more power then RS3