| | tune out or sim 02 sensors?
ok so i either suck at life or everyones tryin to fist me. my exhaust is stock back to the Y pipe. i cut out a 5 inch piece behind the right cat and gutted it cause it was clogged and now i have a flex pipe there (they dont work, i know that now) and now my exhaust leaks and rattles and my service engine light is on. im gonna do LTs and texas speed ORX in Jan. can someone EXPLAIN the difference and the difficulties between tuning the sensors out and using sims???