i'm wondering if they give coil specs? wire gauge, winding count? trying to find more info about these but can't see much... their measurements such as "Q-Factor" are new to me and i'm wondering exactly what it means...
edit:
http://en.wikipedia.org/wiki/Q_factor
what i took away from this: good coils have smaller distance between field and output (so coilover plugs are better) and the more stable of a field produced by the coil, the longer the collapse of the field takes, meaning a longer spark and more complete combustion
i'm wondering what changes effect the q factor in these plugs... is it the type/gauge of coil wire used? alloy type? i know things like gold or platinum have much higher consistency compared with standard copper coil... maybe thats the difference?