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NGK-TR6 or TR-6 Iridium

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Old 03-26-2004, 09:22 AM
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Default NGK-TR6 or TR-6 Iridium

For boosted LS1 should I go with the regular TR-6 or TR-6 Iridium? Why?

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Old 03-26-2004, 10:47 AM
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I dont remember which NGK's I got but they were awful. Ed Wright told me NGKs suck for boosted cars. They were causing misfires and some other problems with my car. Ed Wright suggested Autolites. I switched and it solved the problem.
Old 03-28-2004, 08:50 AM
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ANy1 else? What do you boosted guys run for plugs????? Recommend?
Old 03-28-2004, 11:00 AM
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With the proper tuning, you shouldn't have any trouble with the NGK TR6's. I have dyno tested back to back with the iridiums and saw ZERO change. Save your money there.
Old 03-28-2004, 01:21 PM
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I am running the standard TR6s with no problems!
Old 03-28-2004, 10:54 PM
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Today, NGK recommended their TR6IX plug for blown LS1 motors, gapped at .035.

Last edited by stealth; 03-29-2004 at 11:29 AM.
Old 03-29-2004, 09:45 PM
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Let us know how they work out!
Old 03-29-2004, 10:14 PM
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just about every one I now runs NGK TR6's! I have them and like them.
Old 03-30-2004, 06:17 PM
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autolite 103 no problem here.and I made over 575hp.



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