What is the best way to increase performance in an Audi A4?

I recently purchased an Audi A4 and have been disappointed with its performance. What are some specific and technical ways I can improve its speed and overall performance?

One of the best ways to increase performance in an Audi A4 is to upgrade the engine with a turbocharger. This will provide a significant boost in horsepower and improve acceleration. Alternatively, you can also consider using a performance chip to fine-tune the engine's settings and get more power out of it.