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The gap and the temperature range for the plugs depends on whether you are running stock, a tune, or modified components like a larger turbo or "off-road" exhaust mods. Personally, I've had good success with the NGK FR7BHX-S Ruthenium plugs with a 0.028 gap (stock tune, no mods).
This thread explains a lot on plugs/plug gaps/etc.
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