Originally Posted by #1fordfan
negative effect on the car? not really,but might have a negative effect on your wallet from all the tickets you might get for breaking the noise ordinances!!
would sound loud and nasty,and not in a good way.
It is not that loud at all because the second gens cat is built into the exhaust manifold. It definitely sounds better though. I did that back when I first had my focus modding ventures(=