lol come on now dude stop trying to make me out as a dumb azz not knowing what they had like i told you on the other post not many here are talking computer or EFI systems that would be effected by a non resistor plug and most of them have a resistor cap anyhow. You asked and i told you why a non resistor plug has a shorter faster spark then a resistor plug does and that does make a difference in burning fuel more efficiently which increases performance while a resistor plug wastes energy its all about the resistance at the end of the spark plug....... OHMS law been trying to teach you this but you keep heading back to coils and crap lets have you go out and measure current from one side of a resistor to the other then come back tell me what current drop you have? if its less current then the resistor is limiting the amount going through it those causing it to slow down the flow of current so now tell me what a ignition box would do to speed this up? nothing!