DIYAutoTune Smart Coils

DIYAutoTune Smart Coils by AMP EFI produce CDI-level spark energy--without a CD ignition module. They're manufactured with a 19 amp IGBT ignitor built in and can be driven with a 5 V logic level output. Normally, you would use Smart Coils for distributor-less ignitions, such as a coil-per-plug application; however they can be fired sequentially or every crank revolution (wasted spark coil per plug). Smart Coil specs: * Minimum voltage output (no load, at recommended dwell): 40,000 V * Output energy: 103 mJ * Spark duration: 2.9 ms * Primary resistance: 0.5 ohms (not directly measurable) * Primary inductance: 4.8 mH (not directly measurable) * Secondary resistance: 8,500 ohms * Secondary inductance: 22.5 H * Turns ratio: 71.1 * Maximum current: 19 amps * Maximum battery voltage: 17 V * Nominal dwell: 3.0 ms * Maximum recommended duty cycle is 40 percent * Requires HEI-type plug wire ends/boots Show Less