Car misfiring, replaced spark plugs & ignition coils, still misfire in 2 cyl ???

What is your question?

I have a 2009 BMW 328i X Drive Coupe and I recently had misfires in 4 cylinders and replaced all 6 spark plugs and igntion coils. Now I am getting cod.es that 2 cylinders are still misfiring as well as a code for "ignition system or misfire. Fault: EA" The Check Engine Light is still on, but has never been blinking, just on What would you recommend as my next steps? My thought was fuel pump although I always run Supreme. This is where my knowledge ends and need an experts opinion... Any help or advice would be greatly appreciated. Thank you, in advance. - Greg

What makes this problem better or worse?

you can hear the exhaust "putter" for lack of a better word & the engine is a bit louder than normal

How long has your 2009 BMW 328i xDrive had this problem?

few weeks now