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Straight piping=better mpg?


This is a discussion on Straight piping=better mpg? within the Diesel Trucks! forums, part of the TMC TRUCK & SUV category!
Ok, so i've been seeing folk on other sites say you can get better mpg's with straight piping a diesel. ...

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Old 12-08-2010, 06:26 PM
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Straight piping=better mpg?

Ok, so i've been seeing folk on other sites say you can get better mpg's with straight piping a diesel. Anyone actually know this true for a fact? I already wanted to straight pipe it, but would love a couple extra miles a gallon on top
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Old 12-08-2010, 07:15 PM
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I suppose removing the back pressure created by the muffler might add a TINY bit of better fuel economy, but I can't see how it would add even 1 mpg. Sounds like people who want a loud straight pipe justifying their mod to me.
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Old 12-08-2010, 07:23 PM
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may see one (max) mpg if that was the only change. its best paired with a programmer to get full effect.
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Old 12-08-2010, 08:22 PM
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Yea, haha, i'm guilty of doing stuff to my F-150 and justifying it with a reason lol. And good, i'm already preparing to buy a programmer. Just still stuck and confused in the huge market of them. I have no idea which is best
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Old 12-08-2010, 08:33 PM
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The Cummins actually "likes" a little back pressure to run right. You see them all the time with the 5" monster exhausts or 6" stacks and they are dogs off the line. From what I have heard, the turbos don't spool as quick if there is no back pressure, but I don't know that for sure.
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Old 12-08-2010, 08:35 PM
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Well, if you had a DPF I would say yes, for sure. But with your 24V I would say it would be minimal at most. But boy I sure love the sight of a straight piped cummins rollin some coal
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Old 12-08-2010, 08:35 PM
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Hmm...interesting. Thanks man, mine already doesn't spool up terribly fast as it is so i don't wanna do anything that'll make it even worse
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Old 12-08-2010, 08:36 PM
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Quote:
Originally Posted by 700 sportsman View Post
Well, if you had a DPF I would say yes, for sure. But with your 24V I would say it would be minimal at most. But boy I sure love the sight of a straight piped cummins rollin some coal
O i know, i love blowin some smoke and hearing that sound of a straight piped cummins. There's one in town thats the 3rd gen style truck but man does it sound sweet
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Old 12-08-2010, 08:46 PM
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You DieselHeads are strange people!
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Old 12-08-2010, 08:48 PM
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Originally Posted by Zembonez View Post
You DieselHeads are strange people!
HA, well i'm fairly new to the scene, drove this truck on and off for a few years but now that i own it, and its my daily driver, i get wat all the fuss is about. I miss alot about gas trucks, but dang do i love the diesel. Even if EVERYTHING is more expensive
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