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Discussion Starter #1
What's the consensus on the iridium plugs. My ride is due for a plug change and the NGK look like a good buy.
:)
 

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I have used Motorcraft and Autolite plugs on a stock setup and they work great.

I will consider the Dilithium and Trilithium plugs if they become available for stock street use.
 

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Discussion Starter #6
Re: Not worth it...

GreenBird said:
unless you are running more than 10psi, you should just use good ol copper.
Aren't the stock plugs platinum? I paid nearly $10.00 per plug (Canadian $) when I did the last change, about 96,000KMs ago. The iridium is actually less money.
 

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One small point.....

Platinum plugs have about six times the resistance of
copper plugs. So far, I haven't been able to find any
info on what an Iridium plug's resistance rating might be. :confused:
 

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Just installed a set of bosch platinum +2 plugs on my 4.6 bird. runs great as far as i can tell. dunno if i can feel a difference yet, but i havnt gotten on it too much yet. had to get home to get ready for work. but its got liottle better throttle response. i had stock autolite brand plugs in there before.
 
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