So I replaced all spark plugs, switched the ignition coils, o2 sensors, maf sensors, intercooler pressure sensor, replaced air filters and the car still misfires on cylinder 5,6,7,8. The whole bank is misfiring. Only misfires on idle. No misfires when engine is cold or at high RPMs. Very weird and annoying to diagnose. Obviously mclaren of San Francisco will always recommend a new engine or even a whole new car. I’m just trying to work all my options before I do anything else to it. Anyone can help? Any tip? Anything I’m forgetting to check?