Spark plugs & Gap for Evo9 on Meth
Jan 31, 2009, 08:20 AM
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Spark plugs & Gap for Evo9 on Meth
I am currently running the factory 9 turbo on 91 octane + 100% Meth and ~30psi peak. I have been using the factory plugs and gap, but wonder if it would be better to change the gap. What is the generally accepted rule for running 30psi and gaps on a 9 ? Thanks
Jan 31, 2009, 06:47 PM
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I have Denso II step colder plugs. You can find them by searching on the internet. AMS also sells NGK plugs on there website. They are competition spark plugs and they are not cheap. All for evo IX.
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