MSD MC-4 Programmable Ignition Controls

MSD MC-4 programmable ignition controls for motorcycles combine multiple spark discharge and digital computer accuracy into one compact ignition system, giving you the best of both worlds. You'll be able to program the MC-4s at the track, on the dyno, or wherever, with or without a computer! The supplied Pro-Data plus software gives you just what you have been waiting for--the ability to program ignition timing curves to suit your engine's needs. These MC-4 ignition boxes are for use with single or dual spark plugs per cylinder, and are 1, 2, or 4-cylinder selectable. Features include: * Computer interface for easy programming * 0-25 degree start retard * Mapable run timing curve * Launch ramp delay by time 0-2.5 seconds * 3-step retards by rpm or switch * 0-2.50 second step retard off delay for precise nitrous control * Progressive timing retard by time for progressive NOS * Launch timing curve to prevent tire slippage * Individual cylinder timing when optional cam sync sensor is used * Gear retard--retard a different amount for each gear * Shift kill feature with programmable delays 20-99 milliseconds * Shift kill modes for manual, auto 1, 2, and auto 1, 2, 3 * Optional boost retard curve when used with an external MAP sensor for turbo applications (2-45 psi) * Built-in rpm-activated window switch--turn "on" any device up to 3 amps at any rpm, then back off at a different rpm * Sequential shift light--turn on an optional shift light at a different rpm for each gear * Sequential shifter turns any air shifter into a fully automatic shifter (3 amps max) * Tach output wire for tachometers or data recorders * Monitor mode for easy setup or 3-step switches Show Less