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dual exhaust system?

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exhaust
1K views 14 replies 10 participants last post by  David00 
#1 ·
i've had an issue bugging me for awhile i dont know much about exhaust systems so i have some questions and i've done some reasearch but it confuses me. sorry i dont know much on exhausts.
1st:Is an extra catalyst needed if making it dual?
2nd:X or H
3rd:what does catback mean?
4th:best brand?
5th:will i have to change headers?
6th:will i need to add an O2 sensor?
sorry for so many questions but im trying to learn
oh and what other info will i need to know when purchasing a dual exhaust kit?
 
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