Every modified performance car reaches a point where proper testing becomes more important than adding new parts. Putting a ...

Want to inject some additional performance into your car? Performance chips are an easy way to add more horsepower and torque. If you are looking to get more power and better fuel economy from your ...

Will joined the TopSpeed team over two and a half years ago, bringing his lifelong automotive passion, writing experience, and editorial expertise along with him. Whether classic or modern, American ...

Performance tuning can reveal far more than just power figures, especially on a modified Ford Focus ST. A proper test can ...

Electronic Control Unit (ECU) tuning is a popular method used by car enthusiasts and performance professionals to enhance the performance of a vehicle. This guide provides an in-depth look into the ...