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Exhaust size and mpg

Discussion in 'Ask An Owner Operator' started by magnum2, Jul 3, 2014.

Page 2 of 2
  1. Jul 4, 2014 #11
    Cowpie1

    Cowpie1 Road Train Member

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    Nov 25, 2008
    Kellogg, IA
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    The flange pipe on my 2006 9400 with an ISX was just like Bad Monkey mentioned. 4" at the turbo and expanded out to 5" at the other end of the flange pipe.
     
    Cowpie1, Jul 4, 2014
    Cowpie1, Jul 4, 2014
    #11
    Bad Monkey Thanks this.
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  3. Jul 4, 2014 #12
    freightlinerman

    freightlinerman Road Train Member

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    Mar 4, 2011
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    Big Pete, Big Ego, Small Pete.
     
    freightlinerman, Jul 4, 2014
    freightlinerman, Jul 4, 2014
    #12
  4. Jul 8, 2014 #13
    magnum2

    magnum2 Light Load Member

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    Apr 25, 2014
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    you are right. the exhaust is 5 inch. Is it better to have one 5inch stack vs dual stack? if the similar truck has dual 5inch stacks vs single stack, what would be the diff - mpg wise?
     
    magnum2, Jul 8, 2014
    magnum2, Jul 8, 2014
    #13
  5. Jul 8, 2014 #14
    Popesdiesel

    Popesdiesel Bobtail Member

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    Jul 4, 2014
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    Going back to your reducer question, just get rid of the restriction, since you already are in need of changing the the pipe,. That's what I would do. Less restriction = more power
     
    Popesdiesel, Jul 8, 2014
    Popesdiesel, Jul 8, 2014
    #14
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    • Page 2 of 2