hi, i have a catless exhaust, and have 02 simulators :"after the cat" in order to pass inspection. recently Bank 2 sensor two has been getting too low and setting off the CEL with a p161 code. When i removed the simulator i get a reading of 448 mv which will at times drop to 443 this is on a closed loop, will i cause alot of problems by leaving them unplugged? i switched the simulators around from bank 1 and 2 and i still get the same dropping reading on bank to so that in my mind rules out a bad simulator. An ideas???