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  1. #11
    Crusty Information Officer Hammer166's Avatar
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    Quote Originally Posted by Krooser View Post
    Converters are a whole different ball game...

    If single exhaust won't allow a free enough flow why don't they derate the HP ratings on trucks with single stacks? Say it's 500 HP with twins but only 485 with a single exhaust? The answer is the duals don't make more HP... so the the HP rating stays the same.

    You can get a single muffler that flows more than 2500 CFM... that's a lot of air. Straight pipes will flow even more...
    Mainly because truck engine builders rate their engines on a test stand, with 'x' inches of intake restriction and 'y' inches of back pressure. If either of those numbers is exceeded, HP drops and BSFC increases.

  2. #12
    Road Train Member Powell-Peralta's Avatar
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    i'm basically trying to figure out which would be better for team operation.

    i'm thinking that all the exhaust, in most applications, comes off one manifold then if dual exhaust would split after the "Y".

    More mufflers=less noise since it's coming originally from one manifold?

  3. #13
    Road Train Member Les2's Avatar
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    Keep in mind duals will sound louder cause one pipe is closer to the driver in that application.

  4. #14
    Bobtail Member
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    You can split a manifold on a normaly asp engine but you cant running out the turbo beating1

  5. #15
    Bobtail Member
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    looking at a single exhaust typ.its mounted on the pass. side releaving the operator the noise

  6. #16
    Road Train Member Powell-Peralta's Avatar
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    i guess another way to rephrase the question is:


    If you took a truck with single exhaust and added a dual to it----using the exact same muffler and pipes as the original side, would this then be quieter than single exhaust?

    i'm thinking in theory yes. More mufflers= more noise reduction.

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