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Discussion Starter · #1 ·
What tune is helping out in-terms of fuel mileage increase without deleting the DPF? My dealer is mod friendly to a point and if I start with an air-intake and a HP increase, would I even see an increase in MPG?

08' 450 dually.

Thanks!
 

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Not likely going to see much of an improvement with the DPF still on the truck. Maybe 1-1.5 mpg increase. That is what I have seen posted from people at least.
 

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Discussion Starter · #3 ·
Not likely going to see much of an improvement with the DPF still on the truck. Maybe 1-1.5 mpg increase. That is what I have seen posted from people at least.
Yeah, that was what I was thinking. I pull a lot of weight with the truck and was just thinking if the HP was there if that would increase my MPG by 3 or more. 1 - 1.5 isn't worth dinking with the truck.
 
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