I noticed Toyota use Iridium plugs. This stuff was developed for turbine engines, but now it is used in automotive. In combination with direct ignition coil, it should produce a hell of a spark.
Have oneone replaced one of these plugs, and how much they cost?
Denso Iridium about $10-15 each.
NGK.com sells iridium plugs for about $6. Deng. No Toyota though.
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