i installed a BBK off road Xpipe. I bought a set of eliminators but they aren’t long enough to reach the rear o2s on the Xpipe. Should I get o2 extenders? Does it make a difference if I use em or not?
The rear O2 sensors technically monitor whether or not the cats are effective. They are not part of a wideband or closed loop system on this year model car. You can run with the CEL on, but it is better to have MIL eliminators in case there is a problem that you need to be aware of.
The lack of rear O2 sensors will not cause any form of performance issues. They are to check emissions only.