Thunderheart Ignition kitDesigned for use in custom applications where a Twin Cam motor and crank sensor are used. Does not use a MAP or Cam position sensor. Complete ignition system includes module, coil, wires, Smart Link software, communication cable and instructions (no Harley factory harness required) Consolidates ignition components into a small, easy to mount package Integrated high output single fire operation Fully programmable spark timing and rev limit setting Very