30 MPG Cummins?!

My NV5600 5.9 with light mods returned over 30mpg on my way home through the storm in texas last week! Steady driving at low speeds lead to ideal conditions for high fuel economy. The truck is on 35s with an adjusted speedometer via smarty, with an intake, smarty tunes, 5 inch exhaust.

[@lushapollo6518]

Is this all stock or a tune used to achieve this

[@johnramsayskier]

this is truck had a 5" exhaust and a smarty tune, I drove it very slowly for that tank as there was snow over ice down through oklahoma and texas, they dont plow or salt. The truck regularly gets 23mpg going the speed limit.