they way i understand it and what i have personally observed is the following:extra resistance causes all of the components to work harder.you don't lose spark intensity in fact the opposite is the case with static electricity.BUT----i have seen the distributor caps ,rotors and wires burn up from too high a current.the extra resistance forces the voltage upwards by several hundred so that it can jump the gap.in some cases benzes running the auto part shop favourite bosch platinums have burned up the ignition unit.[remember when gm was running 80 thousand gaps and first started resistor plugs,how long did the coils in the distributor caps last?] i think that so many cars these days are designed for resistor plugs[and it's only the older benzes that use non resistor ] bosch has thrown us to the wolves and made their decision for economic reasons.
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