Benefits of Removing Cat and Running Straight Pipe?

[alhope34]

A lot of people around here with loud mufflers on their civics get their exhaust shops to cut a hole at the top of the cat and hollow it out then wield the top back on so from underneath unless you look really close, it looks normal. But really inside it's just a straight pipe through the cat's outer shell.

In Ontario we have really strict emissions testing, but it isn't too hard to get emissions faked. When I got my first car I didn't know it was so badly beat up as it was, and I was told by a few mechanics the best and easiest solution to solve the emissions problem was to get a new car, which I couldn't do. When I ran out of temp plates the DMV would give me, I finally had to get the papers done. Still had the car 4 months after that till it totally died. I even replaced the cat on that car and ALL of the o2 and no2 sensors on the exhaust...still didn't fix the emissions. Kept failing on what the place called "nox". Limit was 200 and something and my car was doing in the 2500's