Hi my problem started with warning light saying gas cap not on right I repleaced the gas cap well my car started running real ruff won't climb hills and such well I drilled a couple holes in my catalytic converter helped a lil mayb. So now I'm thinking of removing the cat converter and replacing with a pipe or flex pipe there r 3 wires on the cat are those 2 oxygine sensors and a groind and if I did this what do I do with those wires and PS this is the wife of the man doin all this work in just trying to help him out so b nice on all my car lingo cause I dont know jack about cars ty