Do we really need to run O2 sensor simulators with the HF Cats? They state that they recommend them to stop the SES light, but then they don't seem to have them. For anyone running the headers does the light come on without the simulators?
I'm not too concerned yet but in 5 years I will have to get an emission test done and they check the computer for trouble codes before they pass you.
I'm not too concerned yet but in 5 years I will have to get an emission test done and they check the computer for trouble codes before they pass you.