What is the best way to increase horsepower in a Ford Fiesta?

I recently purchased a Ford Fiesta and I am looking to increase its horsepower. Are there any specific modifications or upgrades that would be recommended for this make and model?

The most effective way to increase horsepower in a Ford Fiesta is by installing a performance air intake and exhaust system. These upgrades allow for better airflow and ultimately improve engine power.

You could also consider a computer programmer or chip tune, which can optimize the engine's performance and increase horsepower. Just be sure to do your research and only purchase from reputable brands.

Upgrading your spark plugs and ignition coils can also lead to a boost in horsepower. Make sure to choose high-quality components for best results.