The electronic kit comes with a 1.25 Ohms but when you use a Mopar Blaster coil (Mopar #4876732), you use a 0.25 Ohms (Mopar #2444641). Because the Blaster has higher output voltage and can handle a higher input voltage, when using a 0.25 Ohm vs the 1.25 Ohms the coil sees a higher voltage.
