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Installed KOOK headers no cats now it sounds raspy :-(

This is a discussion on Installed KOOK headers no cats now it sounds raspy :-( within the General Help forums, part of the LSx Technical Help Section category; I installed headers and now it sounds really bad It had a deep tone before and sounded amazing with a ...

  1. #1
    BLKHWK Durango's Avatar
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    Installed KOOK headers no cats now it sounds raspy :-(

    I installed headers and now it sounds really bad It had a deep tone before and sounded amazing with a cat back Flowmaster, I installed Kook long tune with a y pipe and it was so raspy and loud I changed it to a Magnaflow now its just perfect not 2 loud but still sounds very raspy like tiny or like bee's stuck in a can loll paper sideways wisling in the wind loll almost like rattling . Its hard to explain!

    Anyway would high flow cats help that and do I need to re tune if I ionstall Magnaflow high flow cats????


    Thanks guys
    Last edited by Durango; 04-13-2012 at 04:03 PM.

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    Senior Member raynor139's Avatar
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    Cats will help and no need to retune
    Mods - Lid, Skip Shift Eliminator, MGW shifter, UMI SFCs, Founders Lower Control Arms, Founders Panhard Bar, Founders Adj. Torque Arm, UMI Torque arm mount, MWC Drive shaft safety loop, KONI Yellows, Strano Springs, Strano Sway bars, UMI Upper and lower A Arms, 160 thermostat, TSP headers and TSP true duals Monster stage 2 clutch, racetronix fuel pump, Strange S60 rear axle and tune by Frost.

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    Electrical Engineer KMdef9's Avatar
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    Yes, the cats will cut down the rasped a lot. If your dyno tuned for a ORY, I would consider getting it returned. But you don't have to.

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    Smiles for 9.5 Years cammed goat's Avatar
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    Quote Originally Posted by raynor139 View Post
    Cats will help and no need to retune
    Quote Originally Posted by KMdef9 View Post
    Yes, the cats will cut down the rasped a lot. If your dyno tuned for a ORY, I would consider getting it returned. But you don't have to.



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    BLKHWK Durango's Avatar
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    thanks guys

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