If one was to remove there cats, what happens to the slow down lights? Do you just un-plug the sensors and thats it? Does this lead to problems in the future(because you arnt able to monitor problems?) thanks
If you don't have cats, you have no need for them to monitored. There is nothing there to cause extra heat. It's just spent exhaust going through a pipe. You can run the car without the cat ecu's if you have no cats.