Ignition Projects - IP QUAD SPARK COIL Subaru 2011-2020 WRX/ STI 2.5L

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IP Quad-Spark coils for Subaru 2.5L H4 engine vehicles

Spark 4X for More Efficiency !

With constant research and development, we were be able to build the 
Quad-spark system directly into the ignition coil without using an external discharge box.  Our Quad-spark technology creates a secondary voltage and 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.  As with all products from Ignition Projects, 
Quad-spark ignition coils are direct plug and play with the stock wiring harness. No cutting or splicing involved.


  • Eliminates misfire
  • Increased throttle response
  • Stabilizes and smoothens idle
  • Quicker starts
  • 46% increase in ignition power
  • Easy plug and play installation

IP Quad-Spark, sparks 2x more than the original IP Multi-Spark.
In that 1/1000 second, the Quad Spark can fire 4 strong sparks.

Measured Energy of EJ OEM coils vs IP Power Coil Quad Spark