Thinking about a buying a different ride and was wondering if anyone had a good tune for the Ls6. Mileage and power. Thanks James
You arent gonna get any better milage in a C6 than you are in your Dmax
your joking right? just asking, not trying to be a smartazz
they will get 30+mpg highway cruising at the same speed that the duramax gets 20 mpg. 1 6 if you drive hard everywhere in town, 17-19 if you drive normally. it really is pretty amazing what these cars will get for mileage with their power. in a c5 you are looking at over 20mpg city (driving easy) and just under 35mpg highway just cruising.