S&S CYCLE Intelligent Spark Technology (IST) Ignition System Sensor — Crank sensor kit – 99-07 Touring, 00-07 CVO, 00-07 Softail, 99-07 Dyna

The Intelligent Spark Technology (IST) ignition system sensor monitors crank and cam position plus combustion characteristics to optimize power and fuel economy. ⚙️

• The system uses a crank position sensor, cam position sensor if present, MAP sensor, cylinder head temperature sensor and an exclusive knock sensor that detects detonation while the engine runs.
• The knock sensor allows the ECU to automatically adjust ignition timing to eliminate knock whenever it occurs.
• Optimizes power output and improves fuel economy across the rev range.
• The IST ignition module requires an installation kit that must be purchased separately.
• An optional high-output single-fire coil is available for the variable fuel injection system; it contains two separate coils in one package and has an impedance of 3 ohm per coil (sold separately).
• Made in the U.S.A.
• Not for fuel-injected models.
• Not recommended for kick-start applications unless a cam position sensor is used; engines using only a crankshaft position sensor will be difficult to kick start.
• IST ignition modules manufactured after 10-1-03 (serial number begins with "E" or a higher letter) already contain software to support the Guardian Diagnostic System and work in all applications except 2004–05. Modules manufactured after 10-1-05 (serial number begins with "G" or a higher letter) are compatible with 2004–05 models in addition to the other specified applications.