Any improvement in MPG with just a tune?

[recycleman]

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!

[08stroker250]

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.

[recycleman]

Originally Posted by 08stroker250

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.