So i should have recieved my cat from summit yesterday but the FedEX guy delivered it to the wrong house so they said it would be here sometime today. i was checking out the stock cat (still attached to the car), and noticed that there is a steel/metal line coming from somewhere in the engine bay and connecting to the cat. what is it? is it the oxygen sensor?also is there anything special i need to know or should do when installing the hi-flow cat?
thanks, nick

The tube going to the cat is the air injection reactor tube. It routes air to the cat from the belt driven "smog pump" on the front of the engine. You'll probably need a "repair kit" to splice that tube to the new cat, because you're probably going to have to cut the tube off of your old cat. The repair kit will have some high temp rubber hose and some clamps.

damn, i thought the catco cat was a direct replacement. where would i find that kit?
thanks, nick

Most any parts store.