Dynojet Research Ignition Module 6-71 Allows user to advance or retard the ignition curve based on throttle position and rpm, and to tune each cylinder individually Ignition module connects to PCIII USB via a built-in expansion port link Connects to the ignition coils through an intermediate harness connection or directly to the coil connectors; no cutting or splicing of wires is required Direct coil driver technology allows a high degree of flexibility in timing adjustments