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  1. #1

    Default Muffler removal, straight exhaust

    2001 Mobius. I have a muffler leak and have read of all the problems other owners have had with the fiberglass mufflers. I'm considering the removal of the mufflers and replacing them with a straight exhaust tube. No leaks and it's simple.

    I don't see any problems with getting water into the engine.

    I'm not sure how loud it will be. Any feedback?

    I don't think the engine performance will be affected. The long tube and exhaust below the water line should provide sufficient back pressure....?

    Any advice is appreciated.

    Jimmy

  2. #2
    Join Date
    Nov 2010
    Location
    Katy, TX
    Posts
    6,368

    Default

    mufflers dont really provide much back pressure anyways and if you want performance you dont want back pressure. the straight exhaust will make cruising very loud tho
    David

    2017 Moomba Mojo Max Surf Edition, 2 Pair Wetsounds Rev10s powered by an SD2, 6 pair Wetsounds XS650M and Wetsounds XS12 powered by SD6 all controlled by a WS420. 2 Lumitec SeaBlaze X2 Spectrum underwater lights

    SOLD***2008 Mobius LSV, Gravity III , Wake Plate, Z5, Exile SX65c's, Exile XM9s, Exile XI12D, Exile Javelin, Exile 30.2***SOLD

  3. #3
    Join Date
    Jun 2007
    Location
    Vancouver, WA
    Posts
    5,456

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    Makes me think of the big chrome pipes off drag boats. Once your boat is moving fast enough so that the exhaust outlets are above the water line I'll bet the droaning roar behind it would be mind numbing...
    So when is this "old enough to know better" supposed to kick in?

    2001 MobiusV - Slightly Modified...

  4. #4
    Join Date
    Mar 2008
    Location
    Vancouver WA
    Posts
    3,034

    Default

    Quote Originally Posted by rdlangston13 View Post
    mufflers dont really provide much back pressure anyways and if you want performance you dont want back pressure. the straight exhaust will make cruising very loud tho
    Quote Originally Posted by bergermaister View Post
    Makes me think of the big chrome pipes off drag boats. Once your boat is moving fast enough so that the exhaust outlets are above the water line I'll bet the droaning roar behind it would be mind numbing...
    You mean... completely AWESOME! I love the growl of a throaty smallblock.


    PWI as usual...

  5. #5
    Join Date
    Nov 2010
    Location
    Katy, TX
    Posts
    6,368

    Default

    Quote Originally Posted by newty View Post
    You mean... completely AWESOME! I love the growl of a throaty smallblock.
    as do i, but it might get old surfing or wakeboarding.
    David

    2017 Moomba Mojo Max Surf Edition, 2 Pair Wetsounds Rev10s powered by an SD2, 6 pair Wetsounds XS650M and Wetsounds XS12 powered by SD6 all controlled by a WS420. 2 Lumitec SeaBlaze X2 Spectrum underwater lights

    SOLD***2008 Mobius LSV, Gravity III , Wake Plate, Z5, Exile SX65c's, Exile XM9s, Exile XI12D, Exile Javelin, Exile 30.2***SOLD

  6. #6

    Default

    I think it's funny that someone is worried about exhaust noise when my daughters have the entire boat shaking to the rap crap coming out of the speakers. It might be good to know the engine is still running.....lol

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