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.

i own an 07 duramax n i put and edge chip in it it work awsome for a while but now it wont let choose a different progam its stuck on towwing usually when you choose another progam when its through it will unlok the doors and it does all of that like its working find but then it still stays on the towin can you help pleas this is a big prob i want to trade it in for a 1 ton but if i dont get the chip fixed i cant return to the stock program