what should the plugs on a 4TEC be gapped at?
i also have a '96XP, if i were to bump the compression to say 170psi and install a FP spec 1, should i run a cooler plug? BR9ES instead of BR8ES?
i also have a '96XP, if i were to bump the compression to say 170psi and install a FP spec 1, should i run a cooler plug? BR9ES instead of BR8ES?
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