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No comments, but there has been lots of complaining from people running anything but the exact OE plugs, which your NGKs are not. Are you running a different heat range from stock?
The bigger question is why use a JB4 in 2018, when we have full access to the ECU? Are you using it to run meth, nitrous, or quick change boost control? If not you're just adding another point of failure to do something a remap will do better.
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