VIDEO - NGK Iridium Spark Plug Dyno Test

[Scott O'Kashan]

Three more horsepower with a two cylinder motorcycle engine just by changing over to NGK Iridium IX spark plugs. How much more power will they deliver for a four cylinder engine, like in a Corolla?

 

[bluesmoke91]

Interesting, i just put these plugs in my 96, only bought them cuz they were the only ones offered at the auto store. Don't know anything about em.

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[mojospapi]

Curious if anyone has results to share

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[Scott O'Kashan]

Interesting, i just put these plugs in my 96, only bought them cuz they were the only ones offered at the auto store. Don't know anything about em.

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Sure seems fishy that the only spark plug they supposedly had in stock just happened to be the most expensive choice.:shifty::thumbdown: At many discount auto parts store chains the counter people are evaluated on a daily basis by the total dollars of parts they sell. Consumer beware. :thumbdown:

Here is a video from the Maintenance section here that will tell you more about the various types of NGK spark plugs -