Tune for towing...
Posted: Wed Sep 26, 2007 1:07 pm
Has anyone experienced any change in MPG's using the towing tune for a 6.0PSD? I actually lost mileage when using it whether I'm towing or not. Seems like stock works better for me. Still searching for the reason why I bought this tuner...as of now it's accomplished zero. (on any tune) 