Daytona Twin Tec Model 1005 Internal Ignition for 1998-2002 Harley Davidson Spo 2 advance curve families with adjustable advance slope accommodate stock to highly modified engines Digitally set RPM limit (200 RPM steps) Selectable multi-spark mode for quick starting and smooth cruise Coil outputs protected against short circuits Original USB interface and software for downloading built-in data logging and programming custom advance curves (BC#49-8715) sold separately