How to improve the engine performance of a Ford Fiesta?

As a car enthusiast, I have always been curious about how to boost the engine power of my Ford Fiesta. I have tried installing a cold air intake, a performance chip, and upgrading the exhaust system but I'm not satisfied with the results. I want to know if there are any other modifications or tricks that can help improve the engine performance.

Investing in a high-performance air filter and a spark plug upgrade can make a significant difference in power and overall performance. Also, regularly cleaning and maintaining these components can further optimize their performance.

Have you considered getting a turbocharger or supercharger installed? They can provide a significant power boost to your engine without compromising its reliability. However, keep in mind that this modification may require professional installation and might be more expensive.

Another option to consider is a custom tune for your ECU. This can help increase horsepower and torque by optimizing your engine's fuel and timing maps. Just make sure to do thorough research and choose a reputable tuner.