CEL with ART pipes
 

Getting the following codes
P0136
P0156

Codes came about 25 miles after ART pipe install

I get the following readings for the Heated O2 sensors voltage seen in the screenshot attached which, from what I can tell, is within spec from a little googling.

Any idea what I should check first? Can this be caused by an exhaust leak?

Check your tune, that should all be disabled.

I emailed Seb and this is what he told me

"That’s for the actual sensors. Something is up. Those are NOT typical for test pipe install. Usually it’s a P0420 and 430. Also the P2096 and 2098."

Did you use an impact removing the cats? If you did, you screwed them up. Replace them. They are very sensitive.

Nah, no impact was used, we hand removed everything and hand tightened. Could be that I overtightened though, I wasn't following any torque spec because I'm an idiot

Noop, you should be good on those unless you dropped them.

Didn't drop them, but I did put them on the ground.

So can an exhaust leak at the art pipes cause it? I need to go back under the car and re-torque all the bolts down since it has been on the car for a bit now.