- May 21, 2004
- 12
- 0
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I recently put on a Mac cat back system for my 2000 mustang 3.8. It sounds good, but I decided to go ahead and get an h pipe for it to make it true dual exhaust. I have 2 questions, 1 how loud will it be without the cats. 2 will I have to kill the O2 sensors or will the be fine plugged in? it has 2 places where they plug in. If I do need to kill them, how do I do it.