Quick spark plug question?
TR55 is at .055
TR5 is at .040 IIRC
you should be fine with a TR5 or TR55 uless you are running FI or nitrous then I would stick with TR6.
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i would not run them in any type of performance application.
regular tr55 or tr6.
none of that e3 stuff either.
stick with the basics. the rest is just advertising.
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