The FuelTech CDI Racing Ignition Coil is made to be used with our FuelTech FTSPARK ignition module with individual coil per cylinder and also rotary applications This coil is made for Capacitive Discharge Ignition only and can not be used with a inductive ignition driver Only compatible with FuelTech FTSPARK Not compatible with FuelTech SparkPRO   SpecificationsPrimary resistance: 0.09 OHM +- 10%Primary inductance: 0.78 mH +- 15% Secondary resistance: 988 ohm +- 15% Secondary inductance: 3.7 H +- 15% Leakage inductance: 0.057 mH +- 10%Test voltage: 470 Vdc Output (no load): 44 kV MINTurns ratio: 70:1