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Best Spark Plugs


Vrdesign

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  • 1 year later...
  • Member
  • Member For: 5y 4m 15d
  • Location: New zealand

What number heat range is stock spark plugs in fg and if I'm going to run 18psi and 350ish rwkw should I run 1 heat range colder? What number would that be? Do fg xr6t have platinum stock?

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