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In our tune, that lightly loaded area is going to be the stock borderline spark table and cylinder pressure limit no need to modify those areas tuning wise.
If he did not see knock related to your factory plugs heating up to the point where they caused knock, then the colder plugs would not show an improvement and no adjustment needed. The cold plugs are a great insurance policy however and I would absolutely install them.
If he did not see knock related to your factory plugs heating up to the point where they caused knock, then the colder plugs would not show an improvement and no adjustment needed. The cold plugs are a great insurance policy however and I would absolutely install them.