Pulling my hair out, I have changed all the plugs, coils, exhaust system from manifolds out, O2 sensors and still keep getting a trouble code P0407. I have reset PCM and codes, code doesn't come on right away, but will. Have been using more gas than usual, also seems to have lost some power.
Any help would be great!

 

Injector maybe. Swap it see if the miss moves with it..