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Which muffler?

This is a discussion on Which muffler? within the External Engine forums, part of the LSx Technical Help Section category; flowmaster robs horsepower? wow i didnt know that when i put the flowmaster on it gave me a very noticeable ...

  1. #21
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    01 pontiac transam ws6 m6

    flowmaster robs horsepower? wow i didnt know that when i put the flowmaster on it gave me a very noticeable boost off the line...

  2. #22
    SUPREME member-oderator oneBADDz's Avatar
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    Quote Originally Posted by RYDER661
    flowmaster robs horsepower? wow i didnt know that when i put the flowmaster on it gave me a very noticeable boost off the line...
    It doesn't actually cost any horsepower, you just don't gain as much as you can with other catbacks. It's still better than stock

  3. #23
    02 ws6 timmyvws6's Avatar
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    Loudmouth "2" sounds just right. Not to loud, but still turns heads.

  4. #24
    Long Drive
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    Just bought the LOUDmouth 2 from Speed, Inc., this morning. The orginal LOUDmouth resonates too much at 1700 to 2000 RPM, so after running with it for five years, I'm getting to old to put up with the noise! Been told the 2 is somewhat quieter with a deeper sound, maybe not so raspy. Here's hoping!!

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