Colder spark plugs, really?

[Robert986]

Originally Posted by ike84

Robert, I'm not sure you are going to need colder plugs. Obviously your tuner will know better, but you haven't done anything that will change the cylinder temps (FI, nitrous, increasing comp) and I can't imagine he plans on advancing ting that much if any with the increased flow. FWIW, double check beru's temp grading system - different brands move in different directions with the numbering.

Will you do us a favor and ask your tech the reasoning behind the colder plugs? Maybe he knows something we don't.

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Thanks, good reflections.. I´ll go for the Denso IK24, will ask later about the logic behind colder plugs.