How to increase horsepower in my Audi A3?

I have a stock Audi A3 and I want to add some extra power to it. What upgrades can I make to increase the horsepower?

The most effective and efficient way to increase horsepower in your Audi A3 is by upgrading the engine software through a reputable tuning company. This can provide a significant increase in power without compromising engine reliability. Other options include installing a performance air intake and exhaust system.

If you're looking for a quick and simple upgrade, a cold air intake can provide a noticeable increase in horsepower. But for a more significant power bump, consider installing a performance exhaust system. You can also opt for an ECU tuning to fine-tune your engine's performance.