I just bought my truck a few months ago, this is my first diesel and I am very happy with it. I've been looking into getting the high idle and 3 cylinder high idle enabled on it and getting the fooler as I am tired of waiting for it to warm up. My concern is does the 3 cylinder high idle wear 3 cylinders more than the other 3? Does the firing order alternate when in 3 cylinder high idle? I just don't want to tear the engine up. I would think that if Cummins included this in the software that it would be ok to use, after all they are the experts.

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I wouldn't need to warm it up if it were plugged in but the stock heater doesn't work as good from what I can feel. It was warm after plugged in for 2 days, any less and it sure wasn't warm.

Well, I just picked up my truck from the dealer after having the 3/6 cylinder fast idle (thank you for the correction) enabled. They got me for 122 dollars. I am anxious to see it work! I'll test it w/ a resistor tonight or tomorrow when the engine cools down. I ordered the electrical plugs the other day (sorry prowelder, I plan on building myself); I'm thinking about concealing the switches in the ashtray. I haven't looked into the feasibility all that much, but I think I may be able to make a plate to fit in it and mount the switches there. Thanks to all the advice I am going to get a fuel pressure gauge instead of the idiot light. It's just a matter of saving the money at this point (had to buy the wife a new stove this weekend, guess I'll start over w/ the saving).As an aside, I found a key fob in the glove box after I bought the truck. I replaced the batteries and couldn't get the thing to unlock or lock the doors. So, while the truck was at the dealer today I asked them to see if they could program it while they had the DRBIII connected. They told me the fob was good but the CTM would not take the code. They didn't charge me an extra, but they said that most likely the CTM would need to be replaced. What are your thoughts on this?? One last thing, from the TSB:Both features will automatically disable when one of the following occurs: 1. The Automatic Transmission is placed in gear (forward or reverse) or, 2. The Service Brake pedal is depressed or, 3. Throttle position is greater than 0% or, 4. Vehicle Speed is greater than 0 mph or, 5. Coolant Temperature is greater than 79°C (175°F). Is the service brake pedal what I would call the parking brake? My truck is a manual transmission and I always set the parking brake when idling. Does this mean I cannot use the parking break when using the fast idle or does this only apply to automatics?Thanks for all the advice and help.

Parking brake or E brake is what you set... The service brake is the pedal you push to stop the vehicle from rolling... I've the got the same setup...