Spud
Diamond
- Joined
- Jan 12, 2006
- Location
- Brookfield, Wisconsin
I have a 2013 Duramax, so it's the LML engine, saddled with the requirement for DEF fluid every so often.
Any experience with tuner mods to improve mpg? Right now the onboard fuel economy calculator says I get about 12-13 in the city. On the freeway I can get about 18.5 (going purely by what the computer says) if I keep it at 60 - 65 mph.
Any experience with tuner mods to improve mpg? Right now the onboard fuel economy calculator says I get about 12-13 in the city. On the freeway I can get about 18.5 (going purely by what the computer says) if I keep it at 60 - 65 mph.