Sig truck needs to get better mpg's or else. Gettin 12 with camper and 15 unloaded highway. Thanks for you help. 13000 miles.

 

I was getting what your getting with mine when stock, I got the Diablosport and I average 18mpg now and im not easy on it either.

 

the ONLY mod that I've done to my truck that has actually increased mileage was the Smarty DL. Intake, exhaust, TST economy program, injectors etc - none of it helped.

 

I got similar mpg, 12/15 when mine had 13k on the ticker.
Seems like when I hit about 35k it was like somone flipped a switch now I'm 13-14 towing and right around 20 to and from work and that's freeway driving, the bulk of it anyways.