Try the bully dog triple dog! My bro is gettin 20 mpg with it.. I suggest not goin wit edge they are JUNK.. Believe me i went tro two of them and my buddies had a lot of problems with them sending them back all the time.. PPE is a good one to!:helpI was wondering If anyone has tried Powerup Diesel's Programmer? I'm looking for some better mileage!