I have just purchased a 2003 Chevy 2500 with the Duramax Diesel. The first mileage check was 17.9 miles per gallon, the second was 15.2. Will the Superchip program help my mileage? I have been trying to find reviews for this and can not find too much.

Thanks for any information!

Hi, most computer modules, chips or downloaders say they can do 10% better on fuel. But that's only 1.5 mpg. Most will do 1 mpg. It takes a long time to pay off the cost off with improved mileage. For diesels Edge seems to do the best on mileage. I've seen Dodge diesels get as much as 4 mpg better. But not Ford or GM.