I am stuck on this again.. I am trying to figure out how to design the new exhaust so that I can have a tune with cats for on the road and a tune with out cats for off road.
My problem is where do I put the O2 sensors and do I do any thing to them?
It seems that if I have the cut outs before the cats that I should have the O2 sensors before them both right? If so, do I do that O2 sensor modification in the thread posted ^?
