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Thread: best spark plugs for my application

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    best spark plugs for my application

    I have 15g turbos, 550 inj, SAFC2 3" exhaust, Running 14lbs boost. What is the best spark plug for my app. I plan on running 18-20lbs boost. Thanks!

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    get some NGK 4091 gapped down to about .024 for that boost on stock ignition. You may be able to get away with a larger gap.

    Parting 6 speed
    Pampena 3.5 Stroker, GTX 2867 Gen IIs, AEM Series2, oohnoo SMIC, DN Hardpipes, FIC 1650s, Walbro 525, aermotive fpr, Dejon intake pipes, Tial Q, Koyo Rad, Samco Hoses, Stoptech 332mm fronts, HKS GT4 Coilovers, Spec 4+ LW, JDM 6 Speed, Billet shift forks, Pampena brace

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