This 1998 Ford Mustang LX receives new headers, throttle body, air intake, x-shaped crossover pipe, and mufflers in a quest for big bolt-on power - 5.0 Mustang & Super Fords Magazine ...

Check out these bolt-on mods that we're swapping into a 2010 Chevrolet Camaro SS/RS for a faster, ... And predictably the car slowed down as we headed into summer. ... Note the big air silencer.

These days, cars are developed to meet emissions and fuel-economy standards that it's usually not possible to improve on the factory designs. But we've found 10 relatively simple bolt-on ...