It’s a time-honored tradition for late-model Mustangs. Upgrading to a performance exhaust system not only improves horsepower, it also adds that Mustang-specific exhaust tone that has been so popular ...

Horse Sense:As with most X-pipe designs, MagnaFlow's is said to offer performance improvements without an obnoxious exhaust note to turn you deaf. As you will see by the Dyno Doings sidebar, we did ...