Okay, now that I got car back from the muffler shop, I can't get it to stop reading rich. I have a 383 with HSR running SD. No matter what I turn the fuel pressure to, the O2 still reads High in Datamaster. I have LS1 28lb Injectors running 58 PSI on the the fuel pressure. I've dropped it all the way down to 30 PSI, where the engine died on me from running to lean, but it still shows .750-.800 on the O2 voltage, my BLM is constantly set at 80 (120 Normal) which is rich.

Any Ideas? Could my O2 be shot now?

BTW, I have no codes.