3rd Gen High Performance and Accessories (5.9L Only) Talk about Dodge/Cummins aftermarket products for third generation trucks here. Can include high-performance mods, or general accessories. THIS IS FOR THE 5.9L ONLY!

milage w/mp-8 vs mp-8 and smarty

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Old Mar 8, 2008 | 04:06 PM
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kruegerlouie's Avatar
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From: mankato,mn
milage w/mp-8 vs mp-8 and smarty

anyone tried the mp-8 alone vs stacked with a smarty and what settings get the best fuel economy??? was thinking about having the smarty on a lower setting and just using the mp-8 to fine tune.
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Old Mar 8, 2008 | 05:17 PM
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i noticed i get better milage with the even sw#'s and the mp-8 at about 40%. i havent tried to use the mp8 on its own.
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Old Mar 8, 2008 | 07:34 PM
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Bob Wagner's Avatar
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From: WA State
Smile

the timing(odd) will deliver the best fuel economy stacked with the mp-8(pressure) box

I would try levels 1,3 and 5

Level one is 40 increase with NO added fuel.

Thanks
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Old Mar 8, 2008 | 09:07 PM
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FWIW, I have tried similar testing, except I am using an EZ instead of an MP8. And it seems that SW5 gets the best mileage with the EZ on 1.
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Old Mar 8, 2008 | 10:06 PM
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Originally Posted by drillpipe
FWIW, I have tried similar testing, except I am using an EZ instead of an MP8. And it seems that SW5 gets the best mileage with the EZ on 1.
thats the setup I think im going to try next. how do you like it?
I had the power puck with the smarty and it done pretty well. I had good luck with edge before but I like whatever lays big numbers down
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Old Mar 9, 2008 | 09:25 AM
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Like it a lot. Not alot of smoke, good power, decent mileage. I get 15-16 in city driving and 17.5 +/- highway at 75. Plus you still have the power there to teach some gasser a lesson if needed.
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