Horse Sense: In addition to the exhaust and cold-air intake, Ford Racing Performance Parts (www.fordracingparts.com) offers a number of upgrades for the Focus ST, including a short-throw shifter, ...

Enhancing the Focus RS with anti-lag isn’t merely overkill, but such a modification imparts havoc on the exhaust and other components of the all-wheel-drive hot hatchback. An aftermarket exhaust fits ...

It turns out that the stylish dual chrome outlets can do a lot more than just provide an eye-catching finish to a car's aggressive good looks. That's actually just the tip of the iceberg when it comes ...