Engine sputtering/bogging problem
 

I have a 2008 Speed3 GT, and about a week ago, engine started sputtering/bogging out when I drove above 2.5/3 rpm. CEL came on a couple days later, so put some STP fuel system cleaner and replaced all 4 spark plugs a few days ago, and CEL went off. The sputtering/bogging continued, and CEL is back on again. Was thinking it could be the fuel injectors/HPFP, but not sure.

Any thoughts?!

How about getting the code scanned and posting it here? You're car is telling you what's wrong already...

Found a friend with a code reader, and turns out the reader said it was ignition coil #2 . Just ordered one, so hopefully it works! Thanks!