Stabilized output from the alternator extends battery life.

Extends life and increases brightness of headlight bulbs.

Maximized ignition voltage increases fuel economy.

Torque and throttle response are improved.

Audio systems sound cleaner.

Involves proper grounding plus conditioning of the voltage spikes inherent in a car's 12V electrical system. [Constant cycling of high current and high voltage circuits in a car's electrical system cause large spikes in voltage causing your car to run at less than optimal. Large banks of high current capacitors smooth out the voltage spikes.]