Normal
U-grooved/mulitple electrode spark plugs...making larger sparks which in turn creates better combustion. myth or fact?we pay rm40 for a set of 4 normal NGK and rm160+ for a set of denso iridiums. marketing strategy? is the 4X price justified?
U-grooved/mulitple electrode spark plugs...making larger sparks which in turn creates better combustion. myth or fact?
we pay rm40 for a set of 4 normal NGK and rm160+ for a set of denso iridiums. marketing strategy? is the 4X price justified?