Hi,
  I’m currently wiring a G4+ Atom to a Subaru EJ203 (03 BL5 Legacy). I’ve looked through the installation manual & this forum but haven’t been able to find an answer.
The original wasted spark ignition coil (P/N: 22433AA500 / Diamond FH0286) is a 4 post/dual coil assembly & seems similar to the Linkplus drawing I21 (http://www.linkecu.com/support/documentation/technical-drawings/I21%20Subaru%20EJ%20V5%20V6%20Wasted%20Spark%20Ignition) however none of the 4 input plug pins behave like a low resistance primary ignition coil - all measure high resistance & exhibit diode properties (1 current flow direction) when tested. Does this mean that the ignition ignitor is built into the coil assembly?
Kind regards
Ben