The ignition control unit manages the electrical current sent to the ignition coil in order for it to generate the right amount of voltage for the spark-plugs to ignite the fuel mixture. If you are looking to upgrade your performance, a high performance ignition control unit is the perfect solution. Depending on your ignition system setup, it may provide easier starting, reduced plug fouling, more power, advanced timing control, and increased fuel economy. At O'Reilly Auto Parts, we carry performance ignition control units and other performance parts to get the most out of your vehicle.