Rep Power: 0

I'm going to replace my header and cat. I'm not going to have a problem connecting the 1st O2 sensor to the header but the 2nd sensor that connect to the cat is going to be a pain. I'm replacing the factor cat with a racing cat. I've been told by several people that my local tuner shop should be able to install or bypass the 2nd sensor so my check engine light isn't always on. Their clueless and now I need some help. Does anyone know how to bypass or install the second O2 sensor on a racing cat?