nano619er

Yes another code reading powertrain, ignition system, misfire need help never had this code pop up had others like p0302 ect misfire codes still havent figured out what's causing this I done maf, icm delete, coilpacks, bkr7e gapped .028. Boost acting funny also I'm usually about 17 18psi now since all this cant get passed 10psi if it does it will sputter like crazy I believe it's the misfire does anybody have a solution to this cause I'm close to selling this car!!! HELP PLEASE.