I will do that... How clean ? With what ?

The o2 was not giving a code.. Just the AE showed it not having any output voltage. From Im guessing now the O2 sensors were not bad. I guess AE only supports B1S1 and B1S2 which from what I gather are both on the Pass side however, There are not any O2 sensors after the Cat. But I did notice that the overhead trip computer is More responsive, The MPH had began to change a little as I drove and after changing the other 02 sensor, it really changes with the amout of throttle I use..which before It might have changed only .1 MPG in a day.. and now it will drop to 0 MPG is sitting at idle for a few minutes, Before It would only say 8.5..