My car threw the 2626 and 2191. I'm pretty sure that its due to the sensor placement. This is the second time I have gotten the 2626 code. Did you have any issues with the tune changing the sensor placement?
No issues with the tune, it was moved back about an inch.
im about to do bbk cat deletes , am I going to be affected?
You will be fine, your upstream 02's are still in your stock manifold.
-Thomas