hope i can get the most help. but i got a 300 2005 v6 2.7 i ended up buying new coil packs, new spark plug, and intake manifold gaskets ran a couple tests on the car to see if we had spark fuel and compression and its all good. even though with that it’s still misfiring like crazy on cylinder 4 i ended swapping the fuel injectors and coil with cylinder 2 the problem still stayed on cylinder 4. i find it strange too that when i connect the obd scanner it’s doesn’t throw me any misfire codes. i know it’s cylinder 4 because i ran injectors kill switch and the car would get worse with cylinder 4