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  1. Why is a rotor with a resistor used with marelliplex?

    Spider - 105 & 115 Series (1966-1994)
    I have been researching the hei ignition module used with the Marelliplex distributor. The module was designed by GM and is used in a GM distributor with a built-in coil. It appears that GM does not use a resistor in their rotor. I would think that if the goal was to get as much energy to the...