so i recently had a crackle pop tune, i took it off after running it for a week. I don’t have a catless downpipe and i took the time off 2 weeks ago. The other day i had a check engine light pop up so i scanned the code. it was for the o2 sensor bank 1. My ST doesn’t backfire anymore like gurgles and when i shift then accelerate into 2nd gear, the car shakes back and forth a bit. Does the o2 sensor affect the cars performance?Im currently running no tune and i still haven’t changed the o2 sensor.