rb25det spark plugs... what do you run?

[ANVIL]

Currently running BCPR5ES since stock setup and on my new setup was breaking up in high (18psi+) boost. Had to close the gap smaller for it to run good. looking to change my plugs before my retune which should be high 300s ~ around 400whp at around 24-26psi of boost. Debating which plug to go to and was thinking BCPR7ES... any suggestions?

[ANVIL]

Will be DD the car with the occasional drag days and random pulls and runs. Not sure if i should go to 6 range or 7 either

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http://nissanraceshop.com/product/rb20-rb25-rb26-spark-plug/

Copper 7's are the way to go.

[ANVIL]

http://nissanraceshop.com/product/rb20-rb25-rb26-spark-plug/

Copper 7's are the way to go.

Those are BCPR7ES right?

[dbeiler]

7ES or possibly 7EIX (iridium) if you feel like blowing money. Gap them down to 0.28.