USB InterfaceCaracteristicas: Kit includes ignition module, single fire coil, 8. 5mm spark plug wires and instructions Two advance curve families with adjustable advance curves to accommodate stock to wild engine modifications Unit has four rotary switches for adjusting timing, single dual fire, rpm limit and two LED indicator lights Digitally set rpm limit (in 100 rpm steps); selectable single or dual fire mode Selectable multi spark mode for quick starting and