Ignition Projects Quad Spark Ignition Coil Packs - 15-21 WRX
This is the Ignition Projects Quad Spark Ignition Coil Packs. These coil packs have been designed using Ignition Project's Quad-Spark technology that creates a secondary voltage that produces a 46% increase in secondary current. Powerful quad sparks are generated in 1/1000 of a second at low-mid RPM (up to 3000 RPM) increasing throttle response and low-end drivability. After 3000 RPM, the coil switches to a powerful single spark which is critical for performance engines.