How to improve MPG in '02 6.6L duramax???
I have an '02 Duramax in a Chev Silv 2500HD 4x4 crew cab running 15w40 Amsoil and Amsoil air filter with a Superchip set at Performance Tow (BTW...the superchip made NO difference in my MPG at any of the 3 settings) - getting 17mpg in town -19 mpg hwy. at 75mph (average).
How can I improve the MPG?
Has anyone tried a scoup in the hood to force air in or a bigger exhaust to reduce back pressure?
Thank you in advance for your help! PJvH
you are not doing all that bad
My '03 numbers are 20 hwy and 17 city, summer, #2 fuel at 65MPH hwy.
I agree that your not doing all that bad at 75mph.