I just got done with my h22 swap. droped my oxygen sensor out of old motor so ordered one from honda. only CEL code that was coming up was #41(O2 sensor) which i installed and that was it studdeing when accelerating quit. but then egr code came up (12). i then proceeded to cleaned it (wasnt very dirty) and checked vac lines (correct) Code still pops up. changed it out with my old Egr off my h23(cleaned also) it never had any problems. CEL comes right back on. Any ideas?