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I know this has been discussed several times from what I can find, but everything I see is very dated. I just picked up my 03 with 72,000 miles on it. The only mods are cold air intake, and exhaust. What is the best spark plug to use?
 

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Motorcraft SP463 Plugs, 180 deg thermostat would help some as well if you going to add a tune to the list , High flow CAT also helps

Welcome to FF

Tom
 
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