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Is the IK22 ok for use in an NA setup since it's a colder plug or were the NA tests done with the IK20 which is the Iridium OEM replacement? I'd assume you'd want to stick with the stock heat range plug in NA setups and the cooler plug is only needed when boosted.
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NHBP Fit Spørt 5mt bought 6-26-07 Debadged, Tinted and riding on Skunk2 springs. Fujita CAI & 2.5" CatBack Exhaust
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