[SMD]

Hi I have a 2020 Camaro SS fbo. It’s been about 7000 miles since bolt on and tune no problems. I noticed my exhaust was smelling different and on cold start up the idle surges and almost stalls hunting. Will also pop a little on the high way at 3000 rpm and let off the throttle. Put it on the scanner and no codes. Checked some sensors (not a mechanic so some stuff is foreign to me) but I did notice that my O2 sensor 1 on both banks was reading .05 volts super lean and my O2 sensor 2 in both banks was reading 1.9 volts super rich. No miss fires ? It was in closed loop and I know that O2 sensor doesn’t really tell the ECM to do much just the #1 sensor before the cats. Do you think I have bad cats? Anything else I should look at on scanner? Any help would be appreciated. Thank you