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 ...

With custom exhaust development being more popular than ever these days, we've brought you tons of such tales and yet few of the aftermarket developers that play this game take the time to record ...

In this trim but off the bottle, the Pepper turned the Crazy Horse Racing chassis dyno to exactly 100 front wheel horsepower and 105 lbs-ft of torque. After all the fun we had with the jug, we began ...