Feature two advance curve families that are adjustable to accommodate stock and modified engines Selectable multi-spark mode for quick starting and smooth cruising Unit has four rotary switches for timing adjustments, single/dual ignition mode and rpm limit (100 rpm steps) Coil outputs protected against short circuits Require coils with a minimum of 3 ohms resistance and low resistance spiral-core-type plug wires Use the tachometer wire for the PC-link and come with a connector Optional USB interface and software available for programming custom curves (programs available on web site www.daytona-twintec.com) 12V power adapter is used to power up the ignition system when removed from the bike and for installing new maps (sold separately) Made in the U.S.A.. IGNITION 90-94EVO 7PIN EX