In order for any DIY wideband to be accurate, the most important part is the O2 sensor. It MUST be a good true wideband sensor.
I have not heard anything on it.
If anyone in the Houston area has one and wants to compare it to "our group's UEGO wideband", we are willing to do it for a fee. Since we can insert ours into the tailpipe, it will not interfere with the stock O2 sensor.
Why do people let 20 years of Nazi abuse of this over 6000 year old positive religious symbol still control their emotions. Time to restore it to full glory as it has been and still is in the East.