If used responsibly the higher HP tunes will give you slightly higher MPG. Personally I have not felt the need to run the 120 HP setting. The EGT probe is also a nice addition to keep an eye on the EGT’s especially when towing or running the higher HP tunes.
2014 RAM 3500 (Aisin) 3.73 4X4 Limited Crew Cab Long Bed DRW. MM3 tuned by Double R Diesel. Oil Bypass Filter, 50 Gallon auxiliary fuel tank.
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