Kit includes ignition system, 8.5mm spark plug wires, single-fire coil and instructions. Ignition system has two advance curve families with adjustable advance curves to accommodate stock to wild engine modifications. Four rotary switches for adjusting timing and single/dual fire rpm limit. Digitally set rpm limit (in 100 rpm steps), selectable single- or dual-fire mode. Selectable multi-spark mode for quick starting and smooth cruising. Coil outputs protected against short circuits. Uses the tachometer wire for the USB interface and comes with a connector. NOTE: Not for fuel-injected ...