I have a 2005 Chevy Cobalt that gets horrible gas millage. I have heard there is a computer chip that you can purchase that will help improve the millage on this vechile but I am unsure where to purchase as if it will truly help my millage.

Or if there is any other things I can do that will help with my gas millage.

I am open to any suggestions!!

 

This sounds like another chip scam

 

i'd be doing a tune up and filter changes bfor i went to go get a chip for JUST gas mileage