[FC Zach]

I feel your pain brother, I'm dealing with the same BS on my car and want to blow mine up as well (anyone have a Barrett M107 available?!) You have checked all the things I would have recommend to. OMP? Is there a possibility that the AFM is bad and still checks out well with a meter? I have an extra AFM I just need to see if it is a S5. Did you check the TPS with a DVOM or did you just use the two light method? If not, do it with a DVOM and check for smooth movement across the throttle range.