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mufflex exhaust

This is a discussion on mufflex exhaust within the External Engine forums, part of the LSx Technical Help Section category; ive been looknig into cat backs for a while now tryin to decide the one i want look/perfomance wise. on ...

  1. #1
    Member pewterz55's Avatar
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    light pewter metallic
    1999 z28

    mufflex exhaust

    ive been looknig into cat backs for a while now tryin to decide the one i want look/perfomance wise. on the mufflex site they have a lot of different kinds of cat backs and different prices but the pics are all the same pretty much. anyone got any pics or comments on these cat backs? also which one you ordered and how you like em

  2. #2
    Member pewterz55's Avatar
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    light pewter metallic
    1999 z28

    oh yea. im bone stock right now 1999a4 z28 mods ill be doing this summer(hopefully)sfc's,volant cai,and maybe lts

  3. #3
    Veteran Hi-Po's Avatar
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    Black
    1999 TA WS.6

    The Mufflex systems make great power. IMO, its very hard to find a Y-Pipe setup that will out perform a 3.5" or 4" system. I'm running a custom fabbed 4" system and 4" cutout. Its pretty similar to a mufflex. I could post some pictures, but it wont really point you in any direction for a particular mufflex system. I have never heard any complaints from any Mufflex user. They get great reviews all around.
    370 CI - Twin 6766 Turbo - Jakes stage 5 4L80E - MWC 9" - Holley Dominator

    Build in progress...

  4. #4
    Firebird Encyclopedia 9T8W66's Avatar
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    Navy Blue Metallic
    `98 Formula M6 HdTp

    I have the Mufflex 3.5" System behind the stock manifolds and Y pipe and I did feel a performance gain over my previous 3" system.

    Heres a Pic of my Kit off the car



    The reason behind the single out is less turbulence inside the muffler making the system more efficient and therefore produce better power. And with the tucked up turn down makes for a clean rear appearence.


    Craig
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  5. #5
    Member pewterz55's Avatar
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    light pewter metallic
    1999 z28

    I'm not so sure I like the single outlet look though.
    Also do they sell y pipes with cats?(damn Illinois emmisions)

  6. #6
    Sold: LS1 '85 El Camino ls1camino's Avatar
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    2000 Grand Prix GTP
    2000 Trans Am WS6 M6

    I have the 4" Mufflex system (4" to 3" Dual)...not installed yet, but it looks great sitting on my kitchen floor.

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