But at least I could adjust tire size and the tunes actually made a huge difference where so far I’m really disappointed in this EFI live stuff. I’m not real savvy on how this EFI live thing works as I’m use to a Simple plug in Smarty CR tuner I used on my 2004 truck. I need to basically work with a good computer tuner person to get this truck tuned. The fuel mileage is off on the factory dash AND the CTS2. I think it had way more power than my new truck current has.and there no way that should be correct I’d think? The dash Speedo in my new truck is also off and I’d think that could be corrected with the EFI LIVE auto cal ? (From running the bigger tires). I’m looking for someone to tune this thing correctly.there’s no way 10-12mpg is correct?! And power wise I’m use to a 2004 5.9 Cummins I had with a smarty CR, 4.10 gears, 35” tires and basically stock except straight piped and 100hp injectors. The truck has 37x13.5r22 tires and 3.73 gears. There is a knob/selector on the dash that has four positions and I was told that’s how you select 4 different “tunes”. I’m told it has EFI live and I have the “auto cal” small module with a cord to hook it up to the plug to reprogram etc. (The gauge always says it’s full on instrument cluster). It has also been “deleted” so it does not use the DEF fluid. So the truck has been “fully” aning the cat, muffler and EGR stuff is off and the stock 4” exhaust has fillers where all that was. This post is about the engine and I’ll post another post in the correct spot on the body roll issue. BUT it needs a few things done as it really disappointed in the fuel mileage (I’m getting like 10-12mpg!) and the body roll is crazy. 6.5” Zone lift, honey badger front and rear bumpers and a bunch of other stuff. It only has 88k miles and has ton of stuff done to it already.

I just bought a 2015 Ram Mega Cab 2500 4x4 diesel.

Dodge ram efi live see dealer now