I dented the hell outta my Kami header a few weeks back. now i have the car running, but i bent the collector so the two pieces they dont line up right, and im getting an exhuast leak. Now my buddy he gave me a collector he used to have on his car. Now im pretty sure this will fix the exhaust leak, however, his collector does not have a o2 sensor bung. And im running hondata, so i need a o2 sensor reading. I dont want to drill in the cat i have, unless i absolutly have to. Now how hard is it gonna be to drill an o2 bung in the collector? Should i worry about anything, or just bust out the drill and the bits?

Thanks guys.

 

cut it out of your old collector, cut a hole in the new one and weld it in.
or just go to napa and buy one and weld it in

 

all cars need an o2 reading, lol. u should never put it into the cat...and just cut your old one out and weld it in.