I just put Mac longtube headers and an off-road prochamber on my 04 cobra. I messed up and only bought one pair of o2 extensions which I'm using on the front sensors. My question is if the rear sensors are turned off, do I even need to bother extending the wires for the rears? Right now I have the rear sensors screwed into the o/r prochamber with the wires zip tied to the tranny mount since they don't reach and no SES lights yet. Thanks