[muahf30]

I was running a catless downpipe on my 2015 BMW 328i N20. I had to get smog done so I took it to the muffler shop to have the OEM catalytic converter put back on and after clearing the codes and driving it, the cel came back on saying these codes. I’m scared it’ll be a turbo. I’ve also read that the clamp could be in the wrong position keeping the wastegate from opening.