I would really like to know what are the best spark plugs for the 2006 RX-8. I have heard of Iridium and Laser type plugs, Sources tell me as much as a 50HP gain can been observed.

I have a hard time accepting this increase as fact but "to each thier own" Anyway I would like to know the difference's between NGK's Iridium and Laser type Spark Plugs and. Is there a big difference in price?

I think I would like to try changing my plugs out and giving these a try.

If someone has tried this out before please let me know.

M. Murphy