Jackrichardson13

To replace all four o2 sensors it would be about 400$.

I have a 2005 5.3. I have recently been getting the code that my cat is going bad. I could either take them off and bypass the o2 sensors or replace the cat witch would cost more money. I am trying to maximize my fuel economy. I am running a 2.5 inch lift with 33 a/t. I am currently getting 13. I don't have a cold air intake or programmer.