How to increase horsepower in a Ford Focus?

I want to boost the power of my Ford Focus, what are some ways to do so without breaking the bank?

One way to increase horsepower in your Ford Focus is to install a performance air intake system. This will allow for better air flow and ultimately improve engine performance.

Another option is to upgrade your exhaust system. This will not only improve horsepower, but also give your car a more aggressive sound.

You can also invest in a performance chip or tuning device to optimize engine performance and increase horsepower.