Ok so heres the story. I have a 97 z28 auto. I am currently throwing a po137 code oxygen sensor bank 1 sensor 2 low voltage. I have thought about deleting them to run an ory pipe. I live in a state that requires emission testing the plug in not the sniffer test. I have found the simulators but will those function correctly if it is reading a low voltage or would they correct it. Or i have thought about doing a mail order tune and have them tuned out. If I have them tuned out will that allow me to pass emissions? Please excuse the fact that I know nothing about tuning just trying to fix my problem as easy as possible. Thanks!