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It could be but why only those two cylinders. I put heet in it in case.

P0430- catalyst system efficiency below threshold bank 2
P0161-O2 sensor heater circuit bank 2
P0307- cylinder 7 misfire
P0308-cylinder 8 misfire
P0300- multiple misfires

Be replaced all my spark plugs. Did compression test. Swapped coil packs. Replaced injectors on 5,6,7,8 still missfiring and doesn't idle right. Any help would be appreciated.