I have experienced MAF codes before, but right now there is no SES. It finally shifts closer to 3000 rpms like normal. And this mainly happens in D, DS mode has higher rpms. It does have idle issues which I do associate with the MAF, but I didn't think the MAF would cause that kind of vibration under light acceleration. I only really notice the problem when going through residential areas and sometimes i do feel it taking off from a stop light.