On a 5.7 HEMI, shorty headers promise easy bolt-on power without turning your daily driver into a race-only project. The real question is how much horsepower they actually add compared with stock ...

Although the perception is that today's new cars are computer controlled, making it difficult for the do-it-yourselfer to improve his or her car's performance, in actuality today's cars respond to ...

When it comes to classic hot-rodding tricks, one of the very first things enthusiasts do is modify the exhaust for better sound and performance. The tradition started long ago, in an effort to improve ...

Exhaust upgrades are usually one of the first things Mustang owners do. They are often fairly simple to install, not very expensive, and are manufactured by many different companies. We've done ...

These '92-and-up LT1 Corvette headers are bolt-on replacements for the stock exhaust manifolds. They feature l¾-inch primary tubes, 14-gauge mandrel-bent steel tubing, and an industrial nickel plating ...