2.5" Cat into 3" Cat? - FirebirdV6.com/CamaroV6.com Message Board

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  • 2.5" Cat into 3" Cat?

    I have a question. I already have a 2.5" in/Out Magnaflow High-Flow Cat on, but I am now thinking about getting a Full 3" Exhaust. (Because a Pacesetter Headers Release)

    But, Can My 2.5" Cat be opened up into a 3" In/Out Cat?
    <b>2000 NBM Pontiac Firebird</b><br />3800GT Performance Package<br /><br />Intake, Magnaflow Cat, Flowmaster Cat-Back

  • #2
    Probably not, but you can keep the cat and save about $50... a 2.5" cat will not make you lose power like the stock one.
    2002 5-spd NBM Camaro
    Details: www.1lev6.com

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