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Plugs - TR6 or TR55s?

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Old Jul 27, 2009 | 01:11 PM
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Default Plugs - TR6 or TR55s?

Car is 1999 M6 SS with Patriot Stage II heads/Lunati Cam and full bolt ons.

Which plugs should I be using? Thanks!
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Old Jul 27, 2009 | 01:34 PM
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TR55 for sure , TR6 is a colder plug , Are you spraying ??
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Old Jul 27, 2009 | 01:35 PM
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You're gonna get a lot of responses for both. Truth is there are too many variables with your combo (compression, cam size,etc,..) and little difference between the plugs.

Run which ever you want and get a good tune. You'll likely never know the difference.
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Old Jul 27, 2009 | 01:38 PM
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^ true

i have always looked at it like this

TR6 = Nitrous motor
TR55 = NA motor
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Old Jul 27, 2009 | 01:53 PM
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most here will preach like the posters. 55 for NA. and 6 for spray.
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Old Jul 27, 2009 | 01:59 PM
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Alright, sounds good! Probably just go with TR6s as I plan to spray it next year.

Thanks guys!
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Old Jul 27, 2009 | 02:38 PM
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TR6s aren't nitrous plugs. Most just use them with smaller shots because they are somewhat colder than a TR55. In most cases better tuning would make more difference for safety and power.

When you get ready to add nitrous I would suggest reading up a little in the nitrous section and plan on changing plugs again.
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Old Jul 27, 2009 | 02:45 PM
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For every 100-125hp you add you should go 1 step colder on the plug IMO. TR6 is what you should be using.
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i run tr7's with nitrous but a couple of my buddys run tr6's they run just as good with em never any problems with either
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