Quote:
Originally Posted by GySgtFrank
Thanks for the info. I'm not making enough power to need the high end plugs  , but it's good to know your reasoning behind the use of certain plugs. |
Its not about power level. Real advantages of these high end plugs are far better durability and lower voltage requirements for given air gap compared to plugs with more conventional and bigger diameter electrodes.
Less energy you dissipate to create spark, more you have available to create plasma channel - heat which initiates flame front. Fine electrode plugs are also more consistent in sparking which lowers cycle to cycle variation which in turn means more power and better fuel economy.