How to improve Ford Focus engine performance?

I have a Ford Focus and I'm looking to improve its engine performance. What are some modifications or upgrades I can make to achieve this?

One simple way to improve the engine performance of your Ford Focus is by installing a cold air intake. This will allow more air to flow into the engine, resulting in better combustion and increased power.

Upgrading your exhaust system can also have a positive impact on your Ford Focus' engine performance. A high-flow exhaust will reduce backpressure and allow more exhaust gases to escape, resulting in increased horsepower.

Consider adding a performance chip to your Ford Focus' engine. This can help optimize fuel and air mixture, resulting in improved efficiency and performance.