Removing cats

elect70, Oct 2, 7:43am
putting new exaust on my V8 discowithout cats, do i need to do anything about the O2 sensors as they wont be going back in !

intrade, Oct 2, 7:48am
yea o2 sensors are required importantly. you would want to find a forum for the disco to see what you need doing , it all depends on how the ecu used the information from the o2 sensor . otherwise it could be gussling fuel like nothing with no lambda sonds and not knowing what to do injecting just max fuel all the time.

timmo1, Oct 2, 9:17am
Definitely need to re-use the O2 sensors either at the same location or further towards the engine if you have to.

motorboy2011, Oct 2, 9:38am
Are you sure they are o2 sensors! most older stuff has the o2 sensor up on the headers and a separate temp sensor for the cats right by or in the cat. newer stuff requires the temp sensor in the cat, older stuff doesnt.