I just read this . . . well done
if you want mileage get efi live, if you want an intake get a s&b or bills...no oiled filters (like k&n) they can mess with your maf sensor.Excellent post. Lots of good stuff. My 2003 is stock, I do have the Diablo sport intune. I am in it for the mileage. My mentor says cold air intake helps the turbo, I am thinking K&N for about $250. Will it help the duramax in the mileage department, or would I be wasting my money?