I have a few questions,

I purchased a 2007 GMC 2500 Duramax crew cab LT1 classic with 37k and I own a landscape company in MN. It's basically all stock except i've chopped the muffler off for a little tone and hoped to see a little better mpg. I'm looking to improve my mpg either with a chip, air intake etc... Have any thoughts or suggestions? Keep one thing in mind I pull my bobcat a lot and enclosed trailer every day, like I said trying to improve my mpg the best. Thanks

Good luck but in my op all a tuner really does for towing is increase power not mpg's and i tow my lawn trailer every day and only get like 13 if im really easy on it.

Good luck but in my op all a tuner really does for towing is increase power not mpg's and i tow my lawn trailer every day and only get like 13 if im really easy on it.
:)X2 I get 14 so we pretty close:)