What mpg should I get with my Dodge Cummins 3500

[BigRich]

What kind of mileage can I expect pulling a gooseneck trailer with my Dodge 3500 now that I have the Diablo installed? I was getting 14.5 before the addition. I have the program set on economy/tow. Any info would be greatly appreciated. Thank You!

[mikel]

Mileage varies based on driving style more than anything else, so this question is tough to answer.
Either way, you should be able to see a 1-2 mpg gain when towing.

Thanks