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  1. 05-16-2007, 05:08 AM #1
    NJ2002WS.6
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    Metallic Pewter
    2002 Trans Am WS.6

    High Flow Cats questions??

    If I get a 3" y-pipe or True Duals, does that mean that I need to get 3" high flow cats? or can I get 2.5"?
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  2. 05-16-2007, 09:08 AM #2
    Mike's TA
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    Quote Originally Posted by NJ2002WS.6 View Post
    If I get a 3" y-pipe or True Duals, does that mean that I need to get 3" high flow cats? or can I get 2.5"?
    I will be corrected if wrong, but I would think they would have to be 3" as well. Otherwise they would be an air restriction point.
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  3. 05-19-2007, 11:23 AM #3
    mrr23
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    whatever the pipe size is, you will need that same size.
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