What are the top performance upgrades for an Audi A6?

I recently purchased an Audi A6 and want to improve its performance. What options are available and what kind of difference can I expect to see?

One of the best performance upgrades for an Audi A6 is installing a high-flow air filter. This allows for increased air flow into the engine, resulting in improved horsepower and acceleration. Additionally, a performance exhaust system can provide a more aggressive sound and improve engine performance.

If you're looking for a noticeable improvement in performance, consider upgrading to a new engine control unit (ECU) or getting a performance chip. These can optimize the car's performance and make it more responsive to your driving. However, they can be costly and may require professional installation.