Every gasoline engine is basically a series of controlled explosions, and the coil pack is the component that lights the fuse. Your car's battery puts out a measly 12 volts, which is great for your ...

In this video, I show you how to test spark plugs and coils on any car, even if the spark plugs are recessed or hard to reach. Whether you're troubleshooting engine misfires, poor performance, or bad ...

You've got an intake, an exhaust, and a programmer but are still hungry for more bolt-on performance. Most people turn attention to the ignition next. To get more ...