Rear O2 Sensors

Am i right when i say the rear o2 Sensors dont affect performance? because i left mine unhooked because the wire's were messed up i kno the check engine light comes on and everything but the guy at the exhaust shop says i need new ones because it affects performance
 
  • Sponsors (?)


I have had mine unhooked for allmost a monthon my 04 no problems I was to lazy to order extensions for my prochamber. I turned them of in my programmer.

I don't think they affect anything just there to see how your cats are doing.
 
what are MIL'S? my wife wants me to put exhaust on her 01 GT to make it sound more like my 67. It has 40 flows with reg h pipe. so I was considering an O/R H/X pipe and some weld in Flows. But I to was worried about the check engine light and the computer adjusting for the O2 sensors absence????
 
jasontio said:
I have had mine unhooked for allmost a monthon my 04 no problems I was to lazy to order extensions for my prochamber. I turned them of in my programmer.

I don't think they affect anything just there to see how your cats are doing.


I tried to turn mine off even though I bought some extensions, and my light is STILL on....Anybody have any suggestions. Could the light be due to the bump in fuel I gave it??? I dont have an option on my predator to turn my O2 sensors off :shrug: