yea they do
but i can't find anywhere to plug in the 2nd o2 sensor.
OR
would it work to pass emissions if i just hooked the lower one up by itself and left the other one just sitting screwed into the stock exhaust manifold?
its a dx so the cat is on the exhaust manifold
can't see it on here but one sensor goes in between the 4 exhaust pipes coming out and the 2nd one is under the cat