OBJECTIVE: Wet flow, pressure excursions, port volume, runner length, plenum volume—all these figure into an engine's overall efficiency. But there's more… Sometimes theory is neat, but sometimes it ...

One of the easiest ways to tune an engine's performance is with the intake manifold. Yes, the camshaft can have a bigger role in horsepower production, but a camshaft swap includes real work and more ...

There is no question that the DOHC 5.0L Coyote engine has taken Mustang performance to new levels, and the spotlight, but if you have a Three-Valve 4.6L, there are still a lot of performance options ...

Sometimes in this little world we build trucks in, a cool thing happens -- you get more than you expected. We expect an exhaust to add horsepower, but do we expect it to look good, too? The answer is ...

A cold air intake can bring real benefits to your V8 engine's performance and power, delivering greater airflow and bolstered horsepower.