Spark Plug Types
Just swapped my stock plugs for a set of the HKS M-Fire Spark Plugs 45XL (1 step colder). Can't complain. Gapped them at .022, installed them and called it a day. They have been working quite well for my 370whp MR.
You could go NGK Race Plugs...if you want to take a second mortgage out on your home. $400 for a set of plugs is just out right ridiculous!
Last edited by HR2L; Apr 7, 2010 at 07:01 PM.
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