How to improve the performance of my Ford Focus ST?

My Ford Focus ST seems to be lagging when I accelerate and the handling doesn't feel as tight as it used to. Is there anything I can do to improve its performance?

It could be a sign that your car's air filter needs to be replaced. This is a simple and inexpensive fix that can significantly improve your car's performance. Give it a try and see if it helps.

You can also consider installing a performance chip to your engine. This can give your car a boost in power and improve its overall performance. Just make sure to do your research and consult with a professional before making any modifications.