Question is on the dodge cummins diesel engine can I add anything to it to increase miles per gallon. Thanks

 

Cummins official opinion on MPG improvement:

http://www.cummins.com/na/pdf/en/pro..._Whitepape.pdf

low rolling resistance tires and improved aerodynamics can help

https://dodgeforum.com/m_447500/tm.htm

 

Wow, you surely do know your stuff. In the article, I don't remember reading it but what is your opinion on chips to reprogram the cars computer. Somebody told me that these things increase mpg alot. What do you think.