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Will send pictures. Also would an exhaust leak cause a misfire? that sounds unlikely right?

Custom Performance Intake. Unsure about exhaust its been on there since i bought it 3 years ago-same with intake. i have tried to swap coil packs. i put a new one on cylinder 4 too. when i initially took spark plugs out #4 was the dirtiest too.

Could a P2006 Code (Intake Manifold Valve door stuck closed) cause P304 Code (Cylinder 4 misire)? No Tune. Only aftermarket intake and exhaust. New Spark Plugs, New coil pack on cylinder 4, Injectors were professionally cleaned at InjectorRX in Texas. New Intake Manifold Module Solenoid and...