it all depends what you want out of your exhaust.
1. best performance. will be louder, and not pass anything lol.
2. better performance. quieter tone, but still wont pass anything i bet.
3. good performance. tone might be louder, but might pass inspection.
4. youre focused on sound. will more then likely pass.
this is just my opinion too. in the end its your car. currently im option 3.
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