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Discussion Starter #1

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I doubt it would make much difference if any. We have Denso Iridium plugs stock (if i'm not wrong) and they are very good already!

:) Of course you can just buy em and add it to ur sig for the cool factor! :D
 

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I had them on my Lexus SC for 30,000 miles, worked fine, but nothing special. I switched over to Denso Iridiums, again works fine, but didn't notice any extra benefits. Bottom line is if the car is well maintained to begin with, changing spark plugs will not yield any noticable performance difference.
 

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Discussion Starter #4
ok, thanks all
 

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Maybe if you combined that with one of those fuel magnet thingees ???
 

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I have never had a vehicle run better on these plugs. I have tried them twice in two different vehicles and pulled them out because they ran worse and got a refund. NGK or Nippon Denso make the best plugs, IMHO. The factory stuff is really optimized, in most cases.
 
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