I'm out on the road pulling my 8,000# fifth wheel with the Spartan
210 Tow Performance and the fuel mileage is pretty poor (8 mpg).
I've never used the 210 TP, only the 210 & 250 when towing, with the 250 yielding the best performance & fuel economy (11.5).
When I stopped for fuel, I decided to switch tunes and try the 275, since it is my current Daily Driver.
The DashDaq would verify my truck, go through the initialization process, then would give me an Error Message "CDC" that the tune could not be loaded. I made 3 attempts with the same results.
I finally loaded the 250, without any problem.
Has anyone had this problem or knows what Error "CDC" means?