relacing parts, still not fixed

[1boxsterjim]

I have a 2000 Boxster S, 43,000 miles. check engine light came on and the code is a P1126. I have replaced the O2 sensors, both banks, MAF, and still not fixed. I have sprayed starter fluid on many parts looking for leaks to no avail. The range on the MAF measurement did get better with new MAF. What next?

Included a PDF with OBDII data. First data is idle, concern with STFT is N/A and 99.2. Following data is at different revs.