Let's start from the beginning. We put the car onto the Dyno we start datalogging and found the front O2 sensor was not reading.
We pulled out the O2 and found it bent badly!!!! From the last shop.
We installed the new O2 and it was fine for the duration of the Dyno tuning.
After the last run CEL came on.

We did alot of testing and the bottom line is we found the Voltage swinging from 5.5 to 8.5 at the ECU plug itself. The ECU sending out a signal of 2.8 volts.

Plane and simple the ECU is not seeing O2.

If any body has a solution please let me know.