my 2010 Dodge Charger rt keeps throwing me the code p0305 which is a misfire on cylinder 5(it’s a v8 5.7) . It tells me it’s a faulty ignition coil or spark plugs . I’ve replaced both , which led me to believe it’s the fuel injector . I have now replaced that too , the symptoms are idolizing very rough , the check engine light blinks and I keep loosing acceleration until I gas it . I’m pretty stumped at this point , if anyone can shed some knowledge I’d appreciate it .