TwinTurbo.NET: Nissan 300ZX forum - Re: spark plug question
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Subject Re: spark plug question
     
Posted by NIVO88T on October 30, 2013 at 5:57 PM
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In Reply To spark plug question posted by DJ2_300zxLover on October 28, 2013 at 08:28 PM
     
Message rule of thumb is for every 100HP added you need one step colder. But in many rare cases do high HP cars go 3-4 steps colder.

Stock plugs should be fine.

     
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