Increase the Horsepower of Your 4 Cylinder Car

Four cylinder engines are among the most versatile in modern vehicles, but you may be disappointed with the power they produce. Fortunately, there are a number of ways to pull more power out of the four-cylinder motor in your car or truck. Depending on your budget and skill set, you may choose to pursue a number of options, but be aware that many of these modifications may void your warranty.