Q:Why are headers a great bolt-on choice for Corvettes? A:They produce more horsepower and torque than factory exhaust manifolds. B:They create a more aggressive sound than factory exhaust manifolds.

Have you ever tried exhaling through a straw? It's not the easiest thing in the world to do, is it? The full power of your lungs is held back as you attempt to push the air through the narrow-diameter ...