broadrun.....As Rick stated, many of us use the SilverLeaf Program where you can buy one of their boxes with a digital screen you mount on your dash (very pricey) or do what most people do, buy their cable and run the info on a laptop. They give you their program for free, that you can download and play with it's screens and configuration, but in order for it to work, you have to buy their proprietary cable ($350.00) and connect to your OBD sensor (I forgot the name of what they call an OBD connection on diesels).
I'm sure the $350.00 is cheaper or about the same price as a scanner, but I would rather have their program and run it on a laptop. Their program shows you everything that the Cummins engine computer can see.
Here is how I set mine up. I use a small notebook computer that I run all the time. I won't even start my coach without this program running. It has so much info. It will even estimate your rolling torque and rolling horsepower. It also gives you instant mpg which really helps me save fuel. My coach has the older Allison trans control panel that only has one window. This program lets you run the two window version on the screen, letting you know what gear you're in.
This photo shows how I laid my screen out. You can use digital gauges, analog gauges, have 20 things showing or two things showing. The hard part was deciding what I wanted to see and how I wanted to display it.
This photo is my coach idling in Neutral. You can see the Allison is in Neutral (NN) in the upper left. My turbo boost, tach and speed are under that. The second column shows my oil pressure, coolant temp, trans temp and voltage. The program allows me to put alarms on each program and set the parameters. The green circle shows that I'm running within parameters. As you get close to exceeding the parameters, they change to yellow, then red and then alarm.
I like seeing my rolling HP and torque in the next column. Below that is the % of engine load. Cummins DOES NOT read egr temps via it's computer, so the SilverLeaf program can't give you that info. The next best thing is intake manifold temp.
In the last column, I run instant mpg, and then two trip odometers. The upper one I change each fill-up, the next one I run throughout a trip and the lower one is info from the first day the engine fired, which Cummins captures and stores forever.
The fuel mileage parameters have to be adjusted through the program to get them accurate. It took me several adjustments, but I'm about + or - 2-3% on my mpg. Since it shows gallons used, I kept adjusting until my figures were pretty much right on at each fill-up.
Linear Mode
