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The plug looks fine. I would run the 6ES if your motor is mostly stock. Go with the 7ES if you are boosting over 19 psi all day. The 7s wont get hot enough and will miss fire due to the carbon build up from running cool. You will not gane anything putiing a colder plug in YOUR motor.
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Kris
Best ET 11.82
Best MPH 117.4
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