what is the best setting to get the best gas mileage, and what kind of horse power is that setting.

what setting can i leave it on to have horsepower to race on the streets at anytime, but still get decent mileage at least over 17

 

every truck is different as far as mpg. as far as settings for said, the higher ones are better for most. and you also have to control your right foot.

 

I run 5 all the time, unless towing I use 2, works well for me, but as stated above its all about the right foot