Ford Focus: How to improve engine performance?

I've been noticing a decrease in my Ford Focus' engine performance. Are there any tips or tricks to improve it without spending too much money?

Before making any major changes, it's important to regularly maintain your car by changing the oil and air filters. This can contribute to a significant improvement in engine performance. Also, consider getting a tune-up to make sure all parts are functioning properly. Finally, using premium fuel can also have a positive impact on performance.

Another cheap and effective way to improve engine performance is by adding a performance chip to your car. These chips can help optimize fuel efficiency and horsepower, leading to better overall performance. Just make sure to do your research and choose a reputable chip brand.

To really take your Ford Focus' engine performance to the next level, consider upgrading to a cold air intake or performance exhaust. While these modifications may be more expensive, they can greatly improve the car's horsepower, torque, and overall performance.